Influence of δ phase on hot deformation behavior of GH4169 alloy

被引：4

作者：

Wei, Jia-Hu ^{[1
,2
]}

Dong, Jian-Xin ^{[1
]}

Yu, Jian ^{[2
]}

Yao, Zhi-Hao ^{[1
]}

Fu, Shu-Hong ^{[2
]}

机构：

[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

[2] Beijing Institute of Aeronautical Materials, Beijing 100095, China

来源：

Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2012年 / 32卷 / 06期

关键词：

Grain boundaries - Deformation - Grain growth - Crystal microstructure - Recrystallization (metallurgy) - Compression testing - Hot working;

D O I：

10.3969/j.issn.1005-5053.2012.6.011

中图分类号：

学科分类号：

摘要：

In order to reveal the influent of δ phase on the hot deformation behavior of GH4169 alloy, various δ phase sizes and distribution, obtained by the different heat treatment, were investigated. Then, those different samples were hot deformed at 980°C using Gleeble-1500 hot compression testing machine. The effect of pre-precipitated δ phase on hot deformation mechanism and microstructure after deformation of GH4169 alloy was systematically studied. The results show that the amount and distribution of δ phase significantly affect microstructure evolution and recrystallization behavior during hot deformation. The amount of δ phase increases, the stress of deformation reduce. Besides, δ phase promotes the nucleation and growth of recrystallization grains, especially δ precipitation in grain boundary. Furthermore, hot deformation accelerates the dissolution of pre-precipitated δ phase during deformation at 980°C.

引用

页码：72 / 77