作者: John H. Moll , Gunvant N. Maniar , Donald R. Muzyka
DOI: 10.1007/BF02917544
关键词: Structural material 、 Grain boundary 、 Ductility 、 Supersaturation 、 Metallurgy 、 Alloy 、 Precipitation (chemistry) 、 Grain size 、 Superalloy 、 Materials science
摘要: Evaluation of a commercial heat treatment for 706 alloy indicated that it resulted in relatively low 1200° F stress rupture ductility. It was determined this caused by solution which dissolved all the age-hardening phases and coarse grain size supersaturated matrix condition. Based upon extensive fine structure study as well previous experience with 718 other Fe−Ni-base superalloys, is developed effectively optimizes 1200°F stress-rupture properties alloy. The key to best found be precipitation globular plate-like Ni3Cb/Ni3Ti at boundaries conjunction maintaining as-forged structure.