Forming behavior and workability of Hastelloy X superalloy during hot deformation

被引：72
|
作者：
Aghaie-Khafri, M. [1 ]
Golarzi, N. [1 ]
机构：
[1] KN Toosi Univ Technol, Fac Mech Engn, Tehran, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 486卷 / 1-2期
关键词：
hot deformation; superalloy; Hastelloy X; workability;
D O I：
10.1016/j.msea.2007.11.059
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 Hastelloy X superalloy has been characterized using hot compression tests in the temperature range of 900-1150 degrees C and strain rates varying between 0.001 and 0.5 s(-1). The results showed that both kinds of softening mechanisms, dynamic recovery and dynamic recrystallization, occurred during hot working. Hot workability of this alloy has been analyzed by calculating flow localization parameter and construction of workability map for occurrence of shear band. In addition, on the basis of flow stress data obtained as a function of temperature and strain rate in compression, power dissipation map and instability map for hot working have been developed. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：641 / 647
页数：7
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