Enhanced strength and ductility of nano-grained titanium processed by two-step severe plastic deformation

被引：20
|
作者：
Wang, Hongfei [1 ]
Ban, Chunyan [1 ]
Zhao, Nannan [1 ]
Kang, Yiyao [1 ]
Qin, Tipeng [1 ]
Liu, Sitong [1 ]
Cui, Jianzhong [1 ]
机构：
[1] Northeastern Univ, Key Lab, Natl Educ Minist Electromagnet Proc Mat, Shenyang 110819, Liaoning, Peoples R China
来源：
MATERIALS LETTERS | 2020年 / 266卷
基金：
中国国家自然科学基金;
关键词：
Equal-channel angular pressing; Cold rolling; Metals and alloys; Nanocrystalline materials; Microstructure; MECHANICAL-PROPERTIES; ALLOYS; METALS; ECAP;
D O I：
10.1016/j.matlet.2020.127485
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano-grained pure titanium was produced using two-step severe plastic deformation. The nano-grained pure titanium exhibits an excellent mechanical properties that are comparable or even higher than the equivalent properties of conventional Ti-6Al-4V alloy. A significant fraction of nano-scale grains and non-equilibrium grain boundaries appears to enable deformation by grain boundary sliding, which promotes an increase in ductility of the nano-grained pure titanium. The strength improvement is derived from the grain refinement. (C) 2020 Elsevier B.V. All rights reserved.
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页数：4
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