Heat treatment of 706 alloy for optimum 1200 °F stress-rupture properties

作者: John H. Moll , Gunvant N. Maniar , Donald R. Muzyka

DOI: 10.1007/BF02917544

关键词: Structural materialGrain boundaryDuctilitySupersaturationMetallurgyAlloyPrecipitation (chemistry)Grain sizeSuperalloyMaterials 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.

参考文章(1)
John H. Moll, Gunvant N. Maniar, Donald R. Muzyka, The microstructure of 706, a new Fe−Ni-base superalloy Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science. ,vol. 2, pp. 2143- 2151 ,(1971) , 10.1007/BF02917543