Influence of post-deformation on CP-Ti processed by equal channel angular pressing

被引：84
作者：
Stolyarov, V. V. [2 ,3 ]
Zeipper, L. [1 ,4 ]
Mingler, B. [1 ]
Zehetbauer, M. [1 ]
机构：
[1] Univ Vienna, Fac Phys, A-1090 Vienna, Austria
[2] RAS, Mech Engn Res Inst, Moscow 101990, Russia
[3] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia
[4] ARC Seibersdorf Res GmbH, Seibersdorf, Austria
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 476卷 / 1-2期
基金：
奥地利科学基金会;
关键词：
pure titanium; severe plastic deformation; strength and ductility; thermostability; ECAP plus post-deformation; TEM;
D O I：
10.1016/j.msea.2007.04.069
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrafine-grained (UFG) sheets of commercially pure (CP)-Ti were produced by equal channel angular pressing (ECAP), by ECAP plus subsequent rolling as a post-deformation and, for comparison, by rolling only, from coarse-grained (CG) billets. It was found that post-deformation of ECAPed CP-Ti by rolling achieves a higher strength with still considerable ductility, and a higher thermal stability compared with the sample's properties after ECAP deformation and/or rolling solely. Transmission electron microscopy investigations revealed that the post-deformed material has a finer and much more homogeneous microstructure than the rolled CG material. Besides, it was shown that the workability of ECAPed Ti depends on the purity. (C) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：98 / 105
页数：8
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