Evolution of Precipitates in Ni-based Wrought Superalloys During Hot Working

被引：0

作者：

Zhang Wei ^{[1
]}

Chen Zishuai ^{[1
]}

Dong Ruifeng ^{[1
]}

Li Jian ^{[1
]}

Zhou Xing ^{[1
]}

Ma Tianjun ^{[2
]}

Qu Jinglong ^{[3
]}

Wang Qingzeng ^{[2
]}

Gu Yu ^{[3
]}

机构：

[1] Inner Mongolia Univ Technol, Coll Mat Sci & Engn, Hohhot 010051, Peoples R China

[2] Baowu Special Met Co Ltd, Shanghai 200940, Peoples R China

[3] Gaona Aero Mat Co Ltd, Beijing 100081, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2023年 / 52卷 / 09期

关键词：

superalloy; hot working; carbides; gamma ' phase; transition; PRIMARY MC CARBIDE; MICROSTRUCTURAL EVOLUTION; TENSILE PROPERTIES; CREEP-PROPERTIES; M23C6; CARBIDE; BEHAVIOR; TEMPERATURE; STRESS; DECOMPOSITION; INSTABILITY;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MC, M23C6, and gamma' precipitates of GH4738 superalloy at different stages during hot working were studied. Behavior of precipitates in different stages of hot working was investigated: (1) the main precipitates in the superalloy billet are primary MC carbides and primary gamma' phase; (2) after hot deformation, the primary MC carbides are partially decomposed, and the nano-sized intragranular secondary MC carbides as well as a small number of grain boundary secondary M23C6 carbides and secondary gamma' phase are precipitated; (3) after heat treatment, the primary MC carbides are further decomposed until complete dissolution, and then the nanocrystalline secondary MC carbides are transformed into many bottle-shaped secondary M23C6 carbides. Meanwhile, gamma' phase basically achieves the complete precipitation, but it grows slightly.

引用

页码：3170 / 3178

页数：9

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