Constitutive Models for Tensile Deformation Behavior of Ti-22Al-25Nb Alloy Sheet at Elevated Temperatures

被引：0
|
作者：
Lu Yupeng [1 ]
Meng Lingjian [1 ]
Yin Hongliang [1 ]
Lin Peng [1 ,2 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Sci & Technol Precis Heat Proc Met, Harbin 150001, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2023年 / 52卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Ti2AlNb; constitutive model; microstructure; deformation behavior; MODIFIED ZERILLI-ARMSTRONG; HOT DEFORMATION; MECHANICAL-PROPERTIES; PROCESSING MAPS; ARRHENIUS-TYPE; JOHNSON-COOK; MICROSTRUCTURE; CREEP; PREDICT; PHASE;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isothermal uniaxial tension tests for O phase-based Ti-22Al-25Nb alloys were conducted at 1203- 1283 K with temperature interval of 20 K. The strain rates were 2.5x10(-4), 5.0x10(-4), 1x10(-3), 2x10(-3), 4x10(-3), 1x10(-2), and 5x10(-2) s(-1). The microstructures of specimens at different deformation temperatures were characterized. Through the experiment results, the material constants for the constitutive models are determined and the tensile deformation activation energies are 845 165 and 412 779 J/mol at alpha(2)+B-2/ss+O threephase region (1203 - 1243 K) and alpha(2)+B-2 two-phase region (1243 - 1283 K), respectively. Arrhenius-type constitutive models are constructed to characterize the tensile deformation behavior of Ti-22Al-25Nb alloy at different temperatures.
引用
收藏
页码：785 / 790
页数：6
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