Characterization of hot deformation behavior of a biomedical titanium alloy TLM

被引：26
|
作者：
Bai, X. F. [1 ,2 ]
Zhao, Y. Q. [2 ]
Zeng, W. D. [1 ]
Jia, Z. Q. [1 ]
Zhang, Y. S. [2 ]
机构：
[1] Northwestern Polytech Univ, Xian 710072, Peoples R China
[2] Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 598卷
基金：
中国国家自然科学基金;
关键词：
Biomedical titanium alloy; Hot compression; Processing map; Dynamic recrystallization; TLM; PROCESSING PARAMETERS; WORKING; MECHANISMS;
D O I：
10.1016/j.msea.2014.01.005
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 Ti-3Zr-2Sn-3Mo-25Nb (TLM) titanium alloy in the temperature range of 750-850 degrees C and strain rate range of 0.001-1 s(-1) has been investigated by hot compressive testing on the Gleeble-3800 thermal and mechanical simulator. The experimental results show that the deformation temperature and the strain rate significantly affect the flow stress of TLM alloy during isothermal deformation. The flow stress increases with the decreasing of deformation temperature and increasing of strain rate. There is no instability domain of processing map at the temperature range from 750 to 850 degrees C and strain rate range from 0.001 to 1 s(-1). The most peak efficiency domain appears at around deformation temperature of 850 degrees C and the strain rate of 0.01 s(-1) with a peak efficiency of 36%. The mechanism in stability domain is dominated by dynamic recovery and dynamic recrystallization. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：236 / 243
页数：8
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