Structure and mechanical properties of commercial purity titanium processed by ECAP at room temperature

被引：70
|
作者：
Zhang, Yue [2 ]
Figueiredo, Roberto B. [1 ,3 ]
Alhajeri, Saleh N. [1 ,4 ]
Wang, Jing Tao [2 ]
Gao, Nong [1 ]
Langdon, Terence G. [1 ,5 ,6 ]
机构：
[1] Univ Southampton, Mat Res Grp, Sch Engn Sci, Southampton SO17 1BJ, Hants, England
[2] Nanjing Univ Sci & Technol, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China
[3] Univ Fed Minas Gerais, Dept Met & Mat Engn, BR-31270901 Belo Horizonte, MG, Brazil
[4] PAAET, Dept Mfg Engn, Coll Technol Studies, Shuwaikh 70654, Kuwait
[5] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[6] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 25-26期
基金：
美国国家科学基金会;
关键词：
Equal-channel angular pressing; Hardness; Strength; Titanium; Twinning; PURE TITANIUM; CHANNEL; MICROSTRUCTURE; EVOLUTION; EXTRUSION; TWINS;
D O I：
10.1016/j.msea.2011.06.054
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Experiments were conducted on commercial purity titanium to evaluate the microstructure and mechanical properties after processing by equal-channel angular pressing (ECAP) at room temperature. Samples were successfully processed through 1 and 2 passes at two different pressing speeds using an ECAP die with a channel angle of 135 degrees. Following ECAP, a microstructural evaluation showed evidence for the occurrence of basal, prismatic and pyramidal slip together with {1 0 (1) over bar 2}<(1) over bar 0 1 1 > twinning. Hardness measurements confirmed the occurrence of homogeneous strengthening throughout the samples. Tensile testing revealed a high ultimate tensile strength of similar to 750 MPa after 2 passes of ECAP but with a reduction in the measured elongation to failure. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：7708 / 7714
页数：7
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