Influence of cold rolling and ageing treatment on microstructure and mechanical properties of Ti-30Nb-5Ta-6Zr alloy

被引：29

作者：

Wang, Yu ^{[1
]}

Zhao, Juan ^{[1
]}

Dai, Shijuan ^{[1
]}

Chen, Feng ^{[1
]}

Yu, Xinquan ^{[1
]}

Zhang, Youfa ^{[1
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Adv Metall Mat, Nanjing 211189, Jiangsu, Peoples R China

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2013年 / 27卷

关键词：

Ti-30Nb-5Ta-6Zr; Cold rolling; Ageing; Microstructure; Mechanical properties; DEFORMATION-BEHAVIOR; PHASE-STABILITY; TITANIUM; TEXTURE; STRAIN;

D O I：

10.1016/j.jmbbm.2013.06.006

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this study, the relationship between deformation mechanism and rolling reductions was investigated, and the effects of deformation reductions on the microstructure and mechanical properties of the alloys both cold rolled and aged were revealed: It was found that the equiaxed beta grains of the Ti-30Nb-5Ta-6Zr alloy have elongated gradually with increasing the deformation reduction. The deformation mechanism of dislocation slipping, deformed twins and SIM alpha '' phase appeared in the alloy deformed by 23% and 66%. The type of twins of the alloy deformed by 23% and 66% are {112}< 111 > and {332}< 113 > respectively. When the reduction was up to 85%, dislocation slipping was the main mode of deformation accompanying with SIM alpha '' phase occurred. With increasing deformation reduction, the average size of lenticular precipitation a phase decreased gradually. The strength of cold rolled and aged samples increased with increasing deformation reduction, while elastic modulus decreased. Due to the precipitation a phase, the elastic modulus of aged samples was higher than cold rolled. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：33 / 42

页数：10

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