| Quasi-Static Compression Stress-Strain Curves-I, Data Gathering and Reduction Procedures; Results for 1066 Steel. |
JUL 1974 |
|
| Authors:
E. A. Murray Jr.; J. H. Suckling; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
 | As part of the Core Materials Program investigating kinetic energy armor penetrators and armor materials, this report presents the results of quasistatic compression tests run on 1066 steel specimens at hardnesses of 28, 40, and 54 on the Rockwell C scale. The yield strength, Poisson's ratio, and Young's modulus are reported for each hardness. (Author) |
|
| Plasma-Arc Welding of Naval Structural Alloys. |
APR 1974 |
|
| Authors:
Robert L. McCaw; DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD
|
| The application of plasma-arc welding to the fabrication of advanced high performance ships materials, utilizing the key hole mode, has been investigated. Single-pass autogenous butt welds have been produced in 0.062- to 0.375-inch-thick HY-130 steel, 0.062- to 0.250- inch-thick 17-4 precipitation-hardened stainless steel, and 0.070- to 0.480-inch-thick titanium (6A1-4V). Radiographically sound welds with tensile joint efficiencies approaching 100% were produced in the aswelded condition for HY-130 steel and titanium (6A1-4V). ... |
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| Galvanic Corrosion of Coated HY-130 Steel Coupled to 5456 Aluminum. |
MAR 1974 |
21 pages |
| Authors:
Harvey P. Hack; DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD
|
 | Specimens of HY-130 steel were galvanically coupled to 5456-H117 aluminum in natural sea water at velocities of 0 to 30 feet per second. The steel was coated with an epoxy primer and topcoat to various degrees: fully coated, coated with defect, partially coated, and uncoated. Corrosion rates of both materials increased with increasing sea-water velocity. Corrosion of the HY-130 was reduced and that of the aluminum was increased when galvanically ... |
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| Environmental Sensitivity of Structural Metals: Liquid Metal Embrittlement. |
31 MAY 1973 |
|
| Authors:
Paul Gordon; Norman N. Breyer; Darryl L. Albright; William R. Warke; ILLINOIS INST OF TECH CHICAGO
|
| The phenomenon of LME is being investigated on levels from the atomic through bulk specimen and structural properties, and is being considered from both experimental and theoretical viewpoints. The research is aimed at elucidating the three important aspects of LME, namely, the mechanism by which embrittlement takes place at a crack, or potential crack, site, the mechanism by which the embrittling species is transported to this site, and various metallurgical, ... |
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| Structural Studies of Bearing Steel Undergoing Cyclic Stressing. |
APR 1971 |
|
| Authors:
L. Leonard; M. Cocks; J. I. McCool; SKF INDUSTRIES INC KING OF PRUSSIA PA RESEARCH LAB
|
| A report is made on a metallurgical investigation of the failure mechanisms which operate in bearing steels during cyclic stressing. It describes the findings and conclusions reached under this investigation regarding the microstructural changes which accompany fatigue and the nature of fatigu crack initiation and propagation mechanisms. It describes findings from observations of bearing surfaces by electron and light microscopy techniques and relates microstructural and morphological changes with lubrication phenomena. ... |
|
| Glass Bath Heating of Forging Stock. |
MAR 1971 |
|
| Authors:
Robert E. Newcomer; MCDONNELL AIRCRAFT CO ST LOUIS MO
|
| The report describes a Manufacturing Methods Program to evaluate the concept of heating steel and titanium in molten glass and then directly forging. The glass used in this investigation served a two-fold purpose; during heating, it protected the steel from decarburization and scaling and the titanium from contamination; during forging, it served as a lubricant. (Author) |
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| The 10Ni-Cr-Mo-Co Steel Weldment -- Its Fabricability and Structural Suitability for Ultraservice Applications. |
31 JUL 1970 |
|
| Authors:
D. S. Dabkowski; P. J. Konkol; S. R. Novak; A. M. Rathbone; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
|
| Research was conducted to define effects of residual elements on properties of high-yield-strength steels, to study and develop optimum strengthening mechanisms, and to implement extensive base-metal and filler-metal alloy-development programs. As a result of this work, a 10Ni-Cr-Mo-Co steel weldment system has recently been developed that exhibits, at a minimum-yield-strength level of 180 ksi, the excellent toughness, weldability, and stress-corrosion resistance needed for critical hydrospace applications. This report describes the ... |
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| IMPROVED PROCESSING PROCEDURES FOR HEAT-TREATABLE DUAL-HARDNESS STEEL ARMOR. |
29 DEC 1969 |
|
| Authors:
Samuel J. Mangello; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
|
| Because of various processing difficulties and a high rejection rate encountered in the early commercialization of heat-treatable dual-hardness steel armor, extensive studies were made to solve these problems. The process-technology study describes work culminating in the minimization of decarburization, elimination of surface grinding, cutting of plates without edge cracking, and elimination of quench cracking. (Author) |
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| Low Cycle Fatigue of Butt Weldments of HY-100(T) and HY-130(T) Steel. |
NOV 1969 |
|
| Authors:
ILLINOIS UNIV AT URBANA DEPT OF CIVIL ENGINEERING
|
| Data from low cycle, axial fatigue tests of HY-130(T) plain plates and butt weldments, and HY-100(T) plain plates are presented. The fatigue test results of plain plates of HY-130(T) material (descaled and painted) are compared to the data for earlier specimens tested with the mill scale intact. Tests of HY-130(T) butt-welded specimens fabricated by two procedures, one using a coated electrode and the other a second generation GMA wire have ... |
|
| BAUSCHINGER EFFECT IN LOW-CARBON STEEL DURING PURE SHEAR, |
15 AUG 1969 |
|
| Authors:
G. B. Talypov; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| Reverse torsion tests were made of thin wall tabular specimens. With a preliminary deformation to 3 percent, the Bauschinger effect varies with deformation parabolically, at approximately 3 percent, the effect remains unchanged. Formulas were derived for the instantaneous radius of curvature of the flow boundary. The agreement between the theoretical and exptl. results is good. It is believed that the hypothesis of translational isotropic softening and hardening ... |
|
| Review of Recent Developments. High-Strength Steels, |
20 JUN 1969 |
|
| Authors:
T. P. Groeneveld; BATTELLE MEMORIAL INST COLUMBUS OHIO DEFENSE METALS INFORMATION CENTER
|
| Topics included are: Production of a 400-KSI grade of maraging steel; Stress-aging 18Ni (250) maraging steel; Anisotropic shape changes in maraging steel; Maraging stainless steel; Inclusions in high-strength steels; New and revised specifications. |
|
| Workability Testing Techniques. |
JUN 1969 |
|
| Authors:
Albert L. Hoffmanner; TRW INC CLEVELAND OH
|
|
| A Definitive Study of the Characteristic of Toughness of Engineering Materials. Part IV. An Analysis of the Energy Absorption and Fracture Process in Conventional Notched Bars of AISI 4340 Steel as a Function of Tensile Strength. |
APR 1969 |
|
| Authors:
C. A. Griffis; J. W. Spretnak; OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
|
|
| REVIEW OF RECENT DEVELOPMENTS. HIGH STRENGTH STEELS, |
27 SEP 1968 |
|
| Authors:
T. P. Groeneveld; BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER
|
| Contents: Inclusion in high-strength steels; Environmentally induced delayed failures in high-strength steels; The influence of thermomechanical treatments on the mechanical properties of high-strength steels; Evaluation of 18 nickel (350) maraging steel. |
|
| Inclusions in High-Strength Steels. Their Dependence on Processing Variables and Their Effect on Engineering Properties. |
AUG 1968 |
|
| Authors:
J. J. Hauser; M. G. H. Wells; CRUCIBLE STEEL CORP PITTSBURGH PA
|
|
| AN INVESTIGATION INTO THE RELATIONSHIP BETWEEN PRECRACKED CHARPY W/A AND PLANE STRAIN FRACTURE TOUGHNESS FOR HIGH STRENGTH STEELS, |
15 MAY 1968 |
|
| Authors:
C. S. Carter; BOEING CO RENTON WASH COMMERCIAL AIRPLANE DIV
|
| The relationship between K sub IC, established by fracture mechanics procedures, and W/A, determined from precracked Charpy tests, has been examined. Both plain and side grooved Charpy specimens were used. Correlations have been established but these show some scatter. This prevents an accurate prediction of K sub IC from W/A values but a rough estimate can be obtained. (Author) |
|
| THE INFLUENCE OF NICKEL ON THE STRENGTH, TOUGHNESS, AND STRUCTURE OF LOW CARBON STEELS. |
MAY 1968 |
|
| Authors:
Terence M. F. Ronald; AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
|
|
| ENVIRONMENTALLY INDUCED DELAYED FAILURES IN MARTENSITIC HIGH-STRENGTH STEELS. |
APR 1968 |
|
| Authors:
W. David Benjamin; Edward A. Steigerwald; TRW INC CLEVELAND OH
|
|
| COMPILATION OF TENSILE AND CREEP RUPTURE DATA OF SEVERAL AL, MG, TI, AND STEEL ALLOYS, AND NI SUPERALLOYS. |
APR 1968 |
|
| Authors:
AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
|
| A program was conducted to determine the feasibility and possible advantage of processing conventional creep data through the use of computer program technology and to make generally available previously unpublished creep data. Computer programs were developed to fit data, make necessary calculations, tabulate results, and plot finished curves ready for design use. Raw creep data on 24 materials conducted over several years were processed and are presented in the normal ... |
|
| EFFECT OF PLASTIC STRAIN ON THE KISCC OF HY-80, HY-130(T), AND 12NI-5CR-3MO STEELS. |
01 JAN 1968 |
|
| Authors:
Stephen R. Novak; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
|
| An investigation was initiated to establish the effect of plastic strain on the KIscc (plane-strain stress-intensity threshold below which SCC does not occur) behavior of HY-80, HY-130(T), and 12Ni-5Cr-3Mo steels in synthetic sea water. In general, the investigation showed that plastic straining does not affect the KIscc of HY-80 steel of 12Ni-5Cr-3Mo steel whereas it does lower the KIscc of HY-130(T) steel. |
|
| HIGH-STRENGTH STEELS, |
20 DEC 1967 |
6 pages |
| Authors:
T. P. Groeneveld; BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER
|
| Recent steel developments indicate that strength and toughness requirements for 150 ksi yield-strength steel essentially have been met, that the requirements for the 200 ksi yield-strength steel are a near-term probability, and that the requirements for the 250 ksi yield-strength steel are a long-term possibility. The most serious obstacle to meeting the full range of predictions is the attainment of high toughness in plates 6 to 8 inches thick. Thus, ... |
|
| THE EFFECT OF SPECIMEN SIZE AND INTERFACE LUBRICATION ON THE COMPRESSIVE FLOW STRESS OF COPPER AND STEEL. |
NOV 1967 |
|
| Authors:
Charles S. Cook; Joseph W. Spretnak; AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO
|
| Test variables were examined to determine their significance in the cylindrical compression test with overhanging dies. The variables investigated were specimen diameter-to-height ratio (D/H) and interface lubricants for OFHC copper and AISI 1018 steel. For the purpose of evaluating the compressive flow curves, specimens 2.0, 2.5, and 3.0 inches in diameter, and 2.0 to 5.0 inches high were forged in a 500-ton forge press. Tensile flow was also examined for ... |
|
| A COMPREHENSIVE CREEP MODEL. |
JUL 1967 |
|
| Authors:
T. Z. Harmathy; NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BUILDING RESEARCH
|
| Based on Dorn's creep theory, a comprehensive creep model has been developed that is applicable to the calculation of deformation processes at steadily increasing temperatures and slowly varying load. It is shown that the entire course of the creep curve (excepting the tertiary creep) of structural (polycrystalline) materials is uniquely determined by two stress-dependent parameters. Explicit expressions for the description of creep processes are proposed. These expressions cannot strictly be ... |
|
| THE RESISTANCE OF GREASE LUBRICATED METAL COMBINATIONS TO FRETTING DAMAGE. |
JUN 1967 |
|
| Authors:
S. Fred Calhoun; ARMY WEAPONS COMMAND ROCK ISLAND ILL RESEARCH AND ENGINEERING DIV
|
| Five different metals were oscillated against each other to assess the extent of fretting damage. They were all lubricated with the same grease and were subjected to the same pressures and vibration rates. The extent of the fretting damage was dependent upon the softness of the metals and also upon the nature of the metals in contact. Metal specimens oscillated against a like metal suffered less damage than when different ... |
|
| THE TEMPERING BEHAVIOR OF DEFORMATION BANDS IN 52100 STEEL. |
19 MAY 1967 |
|
| Authors:
Salvatore F. Borgese; William J. Pantalone; SKF INDUSTRIES INC KING OF PRUSSIA PA RESEARCH LAB
|
| The deformation bands which form in cyclically stressed rolling bearings were tempered in the electron microscope to establish the carbon level in solid solution in these areas. In most of the specimens no carbide precipitation occurred in these regions when they were tempered at 550 C. In one specimen, tempered at 325 C, many tiny carbides formed at the cell walls inside the deformation bands. These observations are consistent with ... |
|
| COUPLING OF ULTRAHIGH STRENGTH AND FRACTURE TOUGHNESS IN STEELS BY MEANS OF THERMOMECHANICAL PROCESSES. |
MAY 1967 |
|
| Authors:
David Kalish; S. A. Kulin; MANLABS INC CAMBRIDGE MA
|
| A series of eleven alloy steels were designed containing nickel, cobalt, molybdenum and chromium (with 0.14 or 0.19% carbon) as the principal alloying elements. Four similar experimental alloys supplied by the Republic Steel Corporation were evaluated in terms of their suitability for applying strain tempering and ausforming treatments. The transformation characteristics of the steels were determined with and without prior austenite deformation. The variables of interest were austenitizing temperature, isothermal ... |
|
| INDUSTRIAL METHOD OF X-RAY FLUORESCENCE ANALYSIS OF HIGH-STRENGTH STEELS. |
31 MAR 1967 |
|
| Authors:
Donald W. Bowman; Robert J. Rodgers; ARMY TANK-AUTOMOTIVE CENTER WARREN MI COMPONENTS RESEARCH AND DEVELOPMENT LAB
|
| A potential method of quantitative analysis of high-strength steels by X-Ray fluorescence was investigated. A technique for measuring composition is described in the report. Tool steel, stainless steel, and high temperature alloys of widely varying composition did not provide calibration curves capable of the precision desired. Preparation of calibration curves for each type of alloy is considered necessary for precision in quantitative analysis. (Author) |
|
| REVIEW OF RECENT DEVELOPMENTS. HIGH-STRENGTH STEELS, |
22 MAR 1967 |
|
| Authors:
T. P. Groeneveld; BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER
|
|
| A STUDY OF HOT CRACKING IN WELDED HIGH-STRENGTH STEELS USING THE VARESTRAINT TEST. |
MAR 1967 |
|
| Authors:
R. E. Thompson; NAVY MARINE ENGINEERING LAB ANNAPOLIS MD
|
| Hot cracking of HY-130/150 steel and a rare-earth-treated HY-80 steel during welding was investigated with the Varestraint test apparatus, a device which permits independent variation of welding conditions and restraint. The test involves depositing a weld bead and simultaneously applying an instantaneous bending load. The susceptibility of a material to hot cracking is determined from the resulting amount of cracking. Two welding processes were used on thin plate specimens: tungsten-inert-gas ... |
|
| EFFECT OF ELECTROSLAG MELTING ON CORROSION-FATIGUE STRENGTH OF STEEL (VPLYV ELEKTROSHLAKOVOHO PEREPLAVU NA KOROZIYNO-VTOMNU MITSNIST' STALI). |
23 FEB 1967 |
|
| Authors:
I. I. Ishchenko; I. A. Malinovs'ka; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
| Electroslag steel ShKh-15, prepared from normal ShKh-15 steel according to the electroslag melting process developed at the Institute of Welding imeni. Ye. O. Paton, was gas analyzed chemically and tested in a flexing apparatus in air and NaCl solution. This electroslag process is used for making construction and ball-bearing steels. Chemical non-metallic impurities were approximately halved by the process; property changed from 2.0 to 0.5 units, and durability in corrosion-fatigue ... |
|
| THE 9NI-4CO STEELS. |
01 OCT 1966 |
|
| Authors:
T. P. Groveneveld; A. R. Elsea; A. M. Hall; BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER
|
| This memorandum briefly discusses the physical metallurgy, heat treatment, mechanical properties, stress-corrosion properties, and fabrication of the 9Ni-4Co-XC steels. This family of steels was developed specifically to meet the requirements of the aircraft and aerospace industries for materials possessing high strength and high toughness. By varying the composition and heat treatment, the 9Ni-4Co-xC steels can develop strengths in the 200 to 300 ksi tensile-strength range and reportedly possess high toughness. ... |
|
| MECHANICAL-PROPERTY DATA HP 9NI-4CO-25C STEEL. TEMPERED PLATE. |
OCT 1966 |
8 pages |
| Authors:
BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS
|
|
| THE ELECTROSLAG CONSUMABLE ELECTRODE REMELTING AND CASTING PROCESS. PART I. |
25 SEP 1966 |
|
| Authors:
J. B. Tobias; G. K. Bhat; CARNEGIE-MELLON UNIV PITTSBURGH PA MELLON INST OF SCIENCE
|
| The electroslag consumable electrode remelting and casting process developed for producing high quality steels and super alloys deserves special attention. This report traces the development and commercial utilization of this process in the U.S.A, U. S.S.R., and other countries. (Author) |
|
| INCREASED RELIABILITY OF A HIGH STRENGTH STEEL THROUGH THERMAL-MECHANICAL TREATMENTS. |
SEP 1966 |
|
| Authors:
R. T. Ault; K. O. McDowell; P. L. Hendricks; AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH
|
| The relationships between strength, toughness, and environmental delayed failure resistance of low alloy, high strength martensitic D6-AC steel were investigated as a function of thermal and thermal-mechanical treatments. Three processing treatments were investigated: (1) ausforming, (2) conventional austenitizing and quenching, and (3) aus-bay quenching. Tensile strength levels of 200,000 to 360,000 psi were obtained. Aus-bay quenching was found to produce essentially equivalent strength and toughness properties when compared to conventionally ... |
|
| WELDING HIGH-STRENGTH STEELS, |
15 JUL 1966 |
|
| Authors:
P. A. Kammer; D. C. Martin; BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION CENTER
|
| Recent studies of the developments in welding steels with yield strengths greater than 150 ksi have included low-alloy martensitic steels, medium-alloy martensitic steels, nickel maraging steels, and bainitic steels. Only weldments from medium-alloy martensitic steels and nickel maraging steels have mechanical properties approaching those of the base plate without a complete postweld heat treatment. The most serious problem with the other steel is low toughness in the weld fusion zone. ... |
|
| SHORT-TIME CREEP BEHAVIOR OF HEAT-TREATED 4340 STEEL UNDER UNIAXIAL TENSILE AND 1:2 TENSION-TENSION BIAXIAL LOADING, |
24 JUN 1966 |
|
| Authors:
C. W. Austin Jr; ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL AL PHY SICAL SCIENCES DIRECTORATE
|
| This report presents the results of an experimental investigation to determine the short-time creep characteristics of heat-treated 4340 steel after rapid heating under load for uniaxial tensile loading and 1:2 tension-tension biaxial loading. Tests were conducted at three different stress levels at 700 and 1000 F. The test results and their analysis with regard to previously established creep analysis procedures and classical plasticity theory are presented. The results of this ... |
|
| MONOTONIC AND COMPLETELY REVERSED CYCLIC STRESS-STRAIN AND FATIGUE BEHAVIOR OF REPRESENTATIVE AIRCRAFT METALS. |
JUN 1966 |
|
| Authors:
T. Endo; JoDean Morrow; ILLINOIS UNIV URBANA DEPT OF THEORETICAL AND APPLIED MECHANICS
|
| Monotonic and cyclic stress-strain and fatigue behavior in the life range of approximately 10 to 100,000 cycles are experimentally determined for 2024-T4 and 7075-T6 aluminum alloys, SAE 4340 steel (quenched and tempered at 1000F), and titanium alloy 8-1-1. The purpose of the investigation is to establish the necessary materials information and base line fatigue data for cumulative damage studies. Plots of the fatigue life as function of elastic, plastic and ... |
|
| MECHANICAL AND METALLURGICAL BEHAVIOR OF RESTRAINED WELDS IN SUBMARINE STEELS. |
MAY 1966 |
|
| Authors:
Clyde M. Adams Jr.; D. A. Corrigan; MASSACHUSETTS INST OF TECH CAMBRIDGE WELDING LAB
|
| The study was made to develop a greater understanding of the thermomechanical aspects of the fusion welding process, particularly the dynamics of residual stress development and its significance in the cracking of HY - 130/150 steel. A method was developed by which the residual stress distribution in an near a weld can be completely and accurately determined. Weldment residual stresses can be obtained rapidly and economically using only standard strain ... |
|
| INFLUENCE OF IMPURITIES AND RARE-EARTH ELEMENTS ON THE PROPERTIES OF ALLOYS, |
18 FEB 1966 |
|
| Authors:
M. V. Pridantsev; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| The translation considers the influence of certain fusible elements of impurities and additions of alkali earth and rare-earth elements on the technological, mechanical and auxiliary properties of high-alloy steels and alloys. Systematized data about properties of the indicated element-impurities and mechanism of their influence are listed. (Author) |
|
| STRUCTURAL STUDIES OF BEARING STEEL UNDERGOING CYCLIC STRESSING. |
02 JAN 1966 |
|
| Authors:
J. A. Martin ; S. F. Borgese ; A. D. Eberhardt; SKF INDUSTRIES INC KING OF PRUSSIA PA ENGINEERING AND RESEARCH CENTER
|
| A number of typical spall characteristics were revealed by low and high power light microscope examinations of multiple sections made through the spalled area of deep groove ball bearing inner rings taken from 52100 steel bearings that failed in the course of laboratory endurance tests. Deformation bands were found to play a significant role in the propagation of spalls and an idealized model for spall propagation in the presence of ... |
|
| IRRADIATION EFFECTS ON REACTOR STRUCTURAL MATERIALS 1 AUGUST - 31 OCTOBER 1965, |
15 NOV 1965 |
|
| Authors:
L. E. Steele ; C. Z. Serpan Jr.; J. R. Hawthorne; NAVAL RESEARCH LAB WASHINGTON D C
|
| The report includes the following: (1) status of reactor radiation damage surveillance programs in several power reactors, (2) the effect of neutron spectra on properties of steels exposed in light water, heavy water, and graphite-moderated reactors, (3) the alleviation of neutron embrittlement of A350-LF1 steel by thermal annealing treatment, and (4) through-thickness Charpy V-notch ductility characteristics of a 4-in. A302-B plate. |
|
| MICRO- AND MACROCRACK FORMATION. |
OCT 1965 |
|
| Authors:
B. L. Averbach; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| The formation of cleavage microcracks with a length of the order of one grain diameter is considered to be the initial step in fracture. It is assumed that the stress concentration required for cleavage is supplied by thick slip or twin bands, and the critical width of these yield bands is calculated. For example, in iron with a grain radius of 0.01 cm, the critical slip band width is 0.00002 ... |
|
| PLASTIC DESIGN IN HIGH STRENGTH STEEL. THE ELASTIC-PLASTIC ANALYSIS OF PLANE FLEXURAL FRAMES, |
JUL 1965 |
|
| Authors:
H. B. Harrison; LEHIGH UNIV BETHLEHEM PA FRITZ ENGINEERING LAB
|
| An account is given of a Fortran program for the elasticplastic analysis of plane flexural frames. The program has been developed from one first written by Professor C. K. Wang and has proved to be useful in the study of steel structures. With a minimum of input data, the program will enable a computer to carry out a series of elastic analyses of a steel structure. The position of each ... |
|
| PLASTIC DESIGN IN HIGH STRENGTH STEEL. COMPUTER ANALYSIS OF PLANE FRAMES, |
JUL 1965 |
|
| Authors:
H. B. Harrison; LEHIGH UNIV BETHLEHEM PA FRITZ ENGINEERING LAB
|
| A detailed description is given of a computer program to carry out a general first order elastic analysis of any type of plane frame. It is capable of analyzing pinned or rigidly jointed frames, or mixtures of both systems. Shear and axial deformations may be taken into account in rigidly jointed frames. In addition, strains caused by temperature changes, shrinkage or lack-of-fit can be allowed for with little extra effort ... |
|
| NEW 5KHGSVF FORGING STEEL, |
30 MAR 1965 |
|
| Authors:
G. S. Keilin; T. A. Sitnikova; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
|
| 5KhGSVF steel completely satisfies the high requirements placed upon steels for hammer dies and is a full-value replacement for nickel steels 5KhNV, 5KhNM, 5KhNT. 5KhGSVF steel assures a significant saving in scarce nickel (15 - 19 kg per ton) as compared with nickel die steels. Die steel 5KhGSVF must be recommended for wide application in factories of the medical-instrument industry. (Author) |
|
| OCCLUSION OF DIAMOND DUST IN CHROMIUM PLATING ON STEEL, |
30 DEC 1964 |
|
| Authors:
Francis X. Hassion; Joseph Szanto; SPRINGFIELD ARMORY MA
|
| An investigation was conducted to develop a cermet coating for steel substrates that sould have high wear reluctance. Occlusions of diamond particles in chromium plate can be achieved by adding this material to a standard bath in which electrodepos'ts are formed with only slightly altered plating procedures. The evidence for composite coatings is indirect: substrates plated in this fashion have exhibited unusual wear resistance. An application of the methods described ... |
|
| EFFECTS OF COMPOSITION ON THE MECHANICAL PROPERTIES OF NI-CR-MO-CO FILLER METALS. |
01 DEC 1964 |
|
| Authors:
P. J. Konkol; A. M. Rathbone; B. K. Stewart; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
|
| Previous studies to develop maraging-steel experimental HY-180/210 filler metals indicated that aluminum and titanium nonmetallic inclusions may significantly reduce the toughness of maraging steel weld metals. Therefore, a program was initiated to determine the effects of composition on the mechanical properties of Ni-Cr-Mo-Co experimental HY-180/210 weld metals that contained no aluminum or titanium. The effects of carbon (0.02 to 0.30%), nickel (4.0 to 20.0%), chromium (0.0 to 6.0%), molybdenum (0.0 ... |
|
| AN EVALUATION OF HP-150 STEEL, |
01 DEC 1964 |
|
| Authors:
S. J. Manganello; A. M. Rathbone; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
|
| Preliminary investigations indicated that the HP-150 steel might be promising as an HY-130/150 submarine-hull steel, and therefore the Applied Research Laboratory evaluated the mechanical properties, temperability, hardenability, and welding characteristics of plate samples of HP150 steel. Base-metal evaluation of 2-in. thick plates of HP-150 steel indicated that the asreceived mechanical properties were quite good and were similar to those of 2-in. thick production plates of 5Ni-Cr-Mo-V steel, the steel currently ... |
|
| SIMPLIFIED X-RAY ANALYSIS OF RETAINED AUSTENITE, |
02 OCT 1964 |
|
| Authors:
H. R. Erard; SPRINGFIELD ARMORY MA
|
| An investigation was made to develop a series of charts to simplify the determination of volume percentage of retained austenite by X-ray techniques. The relative intensities of selected martensite and austensite diffraction lines were computed as functions of weight and percentage carbon. Charts were prepared from these data displaying volume percentage of retained austenite as functions of weight percentage of carbon and the integrated intensity ratios between selected pairs of ... |
|
| ELECTROCHEMICAL BEHAVIOR OF EXPERIMENTAL SUBMARINE-HULL STEELS IN SYNTHETIC SEA WATER. |
30 SEP 1964 |
|
| Authors:
E. Williams; UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB
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| Corrosion studies were conducted to determine the electrochemical properties of weldments of two 5Ni-Cr-Mo-V steels and HY-80 submarine-hull steel in synthetic sea water. Laboratory tests showed that there was no significant difference in corrosion potential among the base metals. The difference in corrosion potential between base metal and weld metal was much less for the 5NiCr-Mo-V steel weldments (experimental filler metal) than for the HY-80 weldments (E11018 filler metal). The ... |
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