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

被引：71
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
相关论文
共 28 条
[1]   Hardness homogeneity on longitudinal and transverse sections of an aluminum alloy processed by ECAP [J].
Alhajeri, Saleh N. ;
Gao, Nong ;
Langdon, Terence G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (10-11) :3833-3840
[2]   Influence of pressing speed on microstructural development in equal-channel angular pressing [J].
Berbon, PB ;
Furukawa, M ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (08) :1989-1997
[3]   Avoiding cracks and inhomogeneities in billets processed by ECAP [J].
Cetlin, Paulo R. ;
Aguilar, Maria Teresa P. ;
Figueiredo, Roberto B. ;
Langdon, Terence G. .
JOURNAL OF MATERIALS SCIENCE, 2010, 45 (17) :4561-4570
[4]   Deformation Structures of Pure Titanium during Shear Deformation [J].
Chen, Y. J. ;
Li, Y. J. ;
Walmsley, J. C. ;
Dumoulin, S. ;
Roven, H. J. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (04) :787-794
[5]   Accelerated growth of preosteoblastic cells on ultrafine grained titanium [J].
Estrin, Y. ;
Kasper, C. ;
Diederichs, S. ;
Lapovok, R. .
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A, 2009, 90A (04) :1239-1242
[6]   The processing of difficult-to-work alloys by ECAP with an emphasis on magnesium alloys [J].
Figueiredo, Roberto B. ;
Cetlin, Paulo R. ;
Langdon, Terence G. .
ACTA MATERIALIA, 2007, 55 (14) :4769-4779
[7]   Stable and Unstable Flow in Materials Processed by Equal-Channel Angular Pressing with an Emphasis on Magnesium Alloys [J].
Figueiredo, Roberto B. ;
Cetlin, Paulo R. ;
Langdon, Terence G. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (04) :778-786
[8]   The evolution of damage in perfect-plastic and strain hardening materials processed by equal-channel angular pressing [J].
Figueiredo, Roberto B. ;
Cetlin, Paulo R. ;
Langdon, Terence G. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 518 (1-2) :124-131
[9]   Influence of preliminary extrusion conditions on the superplastic properties of a magnesium alloy processed by ECAP [J].
Furui, Mitsuaki ;
Kitamura, Hiroki ;
Anada, Hiroshi ;
Langdon, Terence G. .
ACTA MATERIALIA, 2007, 55 (03) :1083-1091
[10]   The shearing characteristics associated with equal-channel angular pressing [J].
Furukawa, M ;
Iwahashi, Y ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 257 (02) :328-332
123