The Gleeble thermo-mechanical testing device was used to perform constant-load, stress-rupture tests and short-time hot-ductility tests in order to determine the effects of temperature, atmosphere, stress, grain size, strain rate, and amount of Cu on the Cu-contamination hot cracking. These tests established that the hot cracking resulted from liquid-metal embrittlement by Cu contaminating the surfaces of several Fe- and Co-base FCC alloys. Copper contamination totaling only 0.003 mil in thickness ...
a variety of fe-, ni-, and co-base alloys were tested with the tigamajig and the varestraint weldability tests, both with and without cu surface-contamination, to determine the structure sensitivity of the cu-induced hot-cracking. the fe- and co-base alloys that have a fcc structure at the melting point of cu, 1982.3 f (1083 c) were found to be susceptible, whereas the ni-base superalloys were insensitive to the cu-contamination hot cracking. in ...
Reports by Author
