Hot Deformation Behavior and Processing Maps of Zr92Ti8 Alloy

被引：1
作者：
Dong, Y. W. [1 ,2 ]
Tan, Y. B. [1 ]
Ji, L. Y. [1 ]
Zhang, J. X. [1 ,3 ]
Liu, W. C. [1 ]
机构：
[1] Yanshan Univ, Coll Mat Sci & Engn, Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
[2] Tianjin Zhongwang Aluminium Co LTD, Tianjin 301700, Peoples R China
[3] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Hebei, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2020年 / 29卷 / 02期
关键词：
dynamic recrystallization; flow softening; hot deformation; processing map; Zr92Ti8; alloy; HIGH-TEMPERATURE DEFORMATION; TI-6AL-4V ALLOY; MECHANICAL-PROPERTIES; TITANIUM-ALLOY; FLOW-STRESS; GRAIN-SIZE; MICROSTRUCTURE; WORKING; EVOLUTION;
D O I：
10.1007/s11665-020-04599-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The hot deformation behavior of Zr92Ti8 alloy in the beta-phase field was investigated by compression tests at deformation temperatures from 800 to 1050 degrees C and strain rates from 10(-3) to 10(0) s(-1). The true stress-strain curves exhibited a flow softening phenomenon caused by adiabatic heating and dynamic recrystallization (DRX). A hyperbolic-sine Arrhenius-type equation was used to describe the effect of deformation temperature and strain rate on the flow stress. The activation energy for deformation at different true strains was determined to be in the range of 195.0 to 252.2 kJ/mol, and the flow curves were predicted by the strain-modified Arrhenius constitutive equation. The processing maps exhibited two optimal processing domains: one in the temperature range of 825 to 875 degrees C and the strain rate range of 10(-3) to 3.3 x 10(-3) s(-1) and the other in the temperature range of 1022 to 1050 degrees C and the strain rate of 10(-3) to 3.3 x 10(-3) s(-1). The observation of microstructure reveled that DRX was difficult to occur during hot deformation of the Zr92Ti8 alloy.
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页码：914 / 924
页数：11
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