The effect of hot rolling condition on the anisotropy of mechanical properties in Ti-6Al-4V alloy

被引:42
作者
Song, Jin-Hwa
Hong, Ki-Jung
Ha, Tae Kwon [1 ]
Jeong, Hyo Tae
机构
[1] Kangwon Natl Univ, Dept Met & Mat Engn, Kangnung 210702, Gangwon, South Korea
[2] Res Inst Ind Sci & Technol, Pohang Assessment Ctr, Pohang 790330, South Korea
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 449卷
关键词
Ti-6Al-4V alloy; hot rolling; anisotropy; texture; pole figure; mechanical properties;
D O I
10.1016/j.msea.2006.02.313
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A series of hot rolling experiments was conducted on a Ti-6Al-4V (numbers indicate wt.%) alloy by varying the rolling temperatures from 800 to 920 degrees C in both unidirectional and cross rolling methods, to investigate the effect of processing variables on the texture and mechanical properties. The cross rolling ratio was varied from 0.3 to 1.0 at 875 degrees C. The (0 0 0 2), (1 0 1 0), and (1 0 1 1) pole figures of alpha phase of hot-rolled specimens were measured by reflection method up to 75 degrees using Cu K alpha radiation. The anisotropy of mechanical properties was closely related to the crystallographic texture. With the decrease of rolling temperature, in the unidirectional rolling, anisotropy in the yield strength decreased, which was explained by the evaluation of the orientation distribution function value and texture. In the case of cross rolling experiments, anisotropy was negligible and ND//(1 1 2 0) fiber texture was strongly developed as rolling temperature decreased. With the cross rolling ratio decreased from 1.0 to 0.3, the main texture components changed from those similar to fully cross rolled specimen to those similar to unidirectionally rolled ones and anisotropy was found to increase. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:144 / 148
页数:5
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