Grain refinement and properties of pure Ti processed by warm ECAP and cold rolling

被引：329
|
作者：
Stolyarov, VV
Zhu, YT
Alexandrov, IV
Lowe, TC
Valiev, RZ
机构：
[1] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA
[2] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 343卷 / 1-2期
关键词：
equal channel angular pressing; cold rolling; ultrafine grain; titanium; microstructure; property;
D O I：
10.1016/S0921-5093(02)00366-0
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work explored a two-step severe plastic deformation process to produce ultrafine-grained (UFG) Ti with significantly enhanced strength. Warm equal channel angular pressing (ECAP) was first used to refine the grain size of Ti billets to about 350 nm. The Ti billets were further processed by repetitive cold rolling (CR). This two-step process produced UFG Ti with strengths higher than those of common titanium alloys such as Ti-6Al-4V. This paper reports the microstructures, tensile properties, and thermal stability of these Ti billets processed by a combination of warm ECAP and CR. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：43 / 50
页数：8
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