Deformation characteristics of Ti-6Al-4Fe alloys with enhanced high temperature ductility

被引：10
作者：
Kim, Seong-Woong [1 ]
Kim, Jeoung Han [1 ]
Song, Yong Hwan [1 ]
Hong, Jae Keun [1 ]
Hyun, Yong Taek [1 ]
Yeom, Jong-Taek [1 ]
机构：
[1] KIMS, Light Met Div, Chang Won 642831, South Korea
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 559卷
关键词：
Titanium alloy; High temperature deformation; Tensile test; Transmission electron microscopy (TEM); Electron backscatter diffraction (EBSD); TITANIUM-ALLOYS; HOT-WORKING; MICROSTRUCTURE; GLOBULARIZATION; SUPERPLASTICITY; BEHAVIOR; FLOW;
D O I：
10.1016/j.msea.2012.08.039
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Deformation behavior of Ti-6Al-4Fe alloys with high strength and formability was investigated by conducting high temperature tensile test. In tensile test at room temperature, the strength of Ti-6Al-4Fe alloys was higher than that of a commercial Ti-6Al-4V alloy with a similar level of elongation. In particular, the high temperature (700 degrees C) elongation was dramatically increased in Ti-6Al-4Fe alloys showing similar to 800% superplasticity. Grain boundary sliding and suppression of cavity formation (i.e., easier accommodation) during gb sliding due to beta phase were found to be possible mechanisms for the superplasticity of Ti-6Al-4Fe alloys. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：96 / 100
页数：5
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