Deformation characteristics of as-received Haynes230 nickel base superalloy

被引：74

作者：

Liu, Yi ^{[1
]}

Hu, Rui ^{[1
]}

Li, Jinshan ^{[1
]}

Kou, Hongchao ^{[1
]}

Li, Hongwei ^{[1
]}

Chang, Hui ^{[1
]}

Fu, Hengzhi ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 497卷 / 1-2期

关键词：

Haynes230; Hot deformation; Dynamic recrystallization;

D O I：

10.1016/j.msea.2008.07.052

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The hot deformation behavior of nickel base superalloy Haynes230 has been studied using hot compression experiments. Specimens were deformed in the temperature range of 1050-1250 degrees C with strain rates of 10(-3) to 10 s(-1) and total strain of above 0.7. True stress-true strain curves and deformation microstructures were studied. The results show that dynamic recrystallization is the mainly softening mechanism during the high temperature deformation of Haynes230, and it can be effectively promoted by increasing deformation temperature. When deformation temperature is higher than 1150 degrees C, completely recrystallized microstructures can be obtained. Dependence of peak stress on the temperature and strain rate is modeled using the hyperbolic-sine Arrhenius-type equation. The average activation energy is determined to be 404 kJ/mol. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：283 / 289

页数：7

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