| Capacitor Discharge and Flash Welding of SiC-Reinforced High Temperature Al Alloys. |
1993 |
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| Authors:
D. S. Schwartz; J. H. Devletian; S. J. Chen; J. Gould; OREGON GRADUATE INST BEAVERTON
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 | Discontinuously reinforced al alloys (dras) are difficult to join using conventional fusion welding techniques due to inhomogeneous redistribution of the reinforcements and reaction between molten al and sic. two specialized welding techniques, capacitor discharge welding and flash welding, were assessed as possible ways to avoid these problems. using these techniques, welds were made with two dras: 8009/sic/15w. capacitor discharge welding resulted in the formation of al-carbides in the weld zones, ... |
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| The National Shipbuilding Research Program. 1992 Ship Production Symposium Proceedings. Paper No. 7C-2: Strip Cladding of Main Propeller Shafting With Ni Alloy 625 by Electroslag Surfacing |
SEP 1992 |
16 pages |
| Authors:
J. H. Devletian; Y. P. Gao; Q. H. Zhao; W. E. Wood; OREGON GRADUATE INST BEAVERTON
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 | A comprehensive comparison between electroslag surfacing (ESS) and submerged arc surfacing (SAS) using 30 mm (1.2 inch) wide x 0.5 mm (0.020 inch) thick Ni Alloy 625 strip was conducted in both the as-deposited and stress relieved (at 604OC, 1120OF) conditions. In most cases, exactly duplicate cladding conditions were used to best compare ESS with SAS. Ni Alloy 625 strip was deposited on 10 cm (4 inch) thick flat plates ... |
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| Low-Dilution Electroslag Cladding for Shipbuilding. |
AUG 1990 |
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| Authors:
Y. K. Oh; J. H. Devletian; S. J. Chen
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| Its high deposition rate and low dilution make electroslag cladding with strip electrodes the most cost-effective process for marine applications. (Copyright 1990 by American Welding Society). |
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| Microstructure and Mechanical Properties of Electroslag Welds in Ti-6Al-4V Alloy. |
1990 |
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| Authors:
S. J. Chen; J. H. Devletian; OREGON GRADUATE CENTER BEAVERTON DEPT OF MATERIALS SCIENCE AND ENGINEERING
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| The structure and mechanical properties of consumable guide electroslag welds in 50-mm-thick Ti-6Al-4V plate are evaluated in this alloy, the tensile strength and hardness values of the welds match the base metal values; but the tensile elongation and CVN toughness values of the welds are substantially lower than the base metal values; these ductility losses in the welds are correlated to the large prior beta grain size and the coarse ... |
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| The National Shipbuilding Research Program. 1988 Ship Production Symposium. Electroslag Surfacing: A Potential Process for Rebuilding and Restoration of Ship Components |
AUG 1988 |
23 pages |
| Authors:
D. W. Yu; J. H. Devletian; OREGON GRADUATE CENTER BEAVERTON
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| With construction of new commercial ships in the U.S. shipyards at an all-time low and Congressional appropriations insufficient to maintain a U.S. fleet of 600 ships, the priorities of the surviving U.S. shipyards are changing from that of shipbuilding to ship rebuilding, restoration and repair. This paper presents a review of the international literature on the most recent developments in thick section surfacing by electroslag surfacing (ESS) using strip or ... |
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| Weld Properties of the Newly Developed 2519-T87 Aluminum Armor Alloy, |
JUL 1988 |
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| Authors:
S. M. DeVincent; J. H. Devletian; S. A. Gedeon
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| The filler metals that have the best as-welded strength when welding 2519-T87 to itself are 2319 and 4145. Of these, 2319 has the better ductility. The filler metal has the highest as-welded strength and ductility when welding 2519-T87 to 5083-H131 is 4043. Reduced heat input, type of shielding gas, plate thickness and postweld heat treatment have a minor influence on the weld strength and ductility (for the materials and parameters ... |
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| Rapid Solidification of Stainless Steels by Capacitor Discharge Welding, |
JUN 1988 |
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| Authors:
S. Venkataraman; J. H. Devletian
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| Capacitor discharge welding has been found to be a unique method to produce rapid solidification under the influence of an one-dimensional temperature gradient in welds up to 6.4 mm diameter. The objectives of this study were: to understand the role of process parameters in capacitor discharge welding to control the weld cooling rate during solidification; and, to apply the capacitor discharge process to study the microstructural modifications in austenitic stainless ... |
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