Fatigue Life and Failure Characteristics of an Ultrafine-Grained Ti-6Al-4V Alloy Processed by ECAP and Extrusion

被引：30

作者：

Polyakov, Alexander V. ^{[1
]}

Semenova, Irina P. ^{[1
]}

Huang, Yi ^{[2
]}

Valiev, Ruslan Z. ^{[1
,3
]}

Langdon, Terence G. ^{[2
,4
,5
]}

机构：

[1] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[2] Univ Southampton, Mat Res Grp, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England

[3] St Petersburg State Univ, Lab Mech Bulk Nanostruct Mat, St Petersburg 198504, Russia

[4] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[5] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

来源：

ADVANCED ENGINEERING MATERIALS | 2014年 / 16卷 / 08期

基金：

欧洲研究理事会;

关键词：

BEHAVIOR; DEFORMATION;

D O I：

10.1002/adem.201300530

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments were conducted to investigate the low-cycle deformation behavior of an ultrafine-grained (UFG) Ti-6Al-4V alloy produced by severe plastic deformation (SPD) through a combination of equal-channel angular pressing (ECAP) and extrusion. The fatigue properties were examined by stress-controlled fatigue testing at stress amplitudes in the range of 700-1050 MPa. The specimens exhibited a dimpled final overload fracture mode. The results show the UFG alloy has a longer fatigue life and a finer dimple size than the coarse-grained material.

引用

页码：1038 / 1043

页数：6

共 20 条

[1] Overview of fatigue performance of Cu processed by severe plastic deformation [J].

Agnew, SR ;

Vinogradov, AY ;

Hashimoto, S ;

Weertman, JR .

JOURNAL OF ELECTRONIC MATERIALS, 1999, 28 (09) :1038-1044

[2] 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

[3] An overview:: Fatigue behaviour of ultrafine-grained metals and alloys [J].

Hoeppel, H. W. ;

Kautz, M. ;

Xu, C. ;

Murashkin, M. ;

Langdon, T. G. ;

Valiev, R. Z. ;

Mughrabi, H. .

INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (09) :1001-1010

[4] Microstructural study of the parameters governing coarsening and cyclic softening in fatigued ultrafine-grained copper [J].

Höppel, HW ;

Zhou, ZM ;

Mughrabi, H ;

Valiev, RZ .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2002, 82 (09) :1781-1794

[5] Principle of equal-channel angular pressing for the processing of ultra-fine grained materials [J].

Iwahashi, Y ;

Wang, JT ;

Horita, Z ;

Nemoto, M ;

Langdon, TG .

SCRIPTA MATERIALIA, 1996, 35 (02) :143-146

[6]

Joshi V. A., 2006, TITANIUM ALLOYS ATLA, P228

[7] Fatigue strength, microstructural stability and strain localization in ultrafine-grained copper [J].

Kunz, L. ;

Lukas, P. ;

Svoboda, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 424 (1-2) :97-104

[8] Fatigue and microstructure of ultrafine-grained metals produced by severe plastic deformation [J].

Mughrabi, H ;

Höppel, HW ;

Kautz, M .

SCRIPTA MATERIALIA, 2004, 51 (08) :807-812

[9]

Mughrabi H., 2001, MATER RES SOC S P, V634, pB2

[10] Influence of annealing on ductility of ultrafine-grained titanium processed by equal-channel angular pressing-Conform and drawing [J].

Polyakov, Alexander V. ;

Semenova, Irina P. ;

Valiev, Ruslan Z. ;

Huang, Yi ;

Langdon, Terence G. .

MRS COMMUNICATIONS, 2013, 3 (04) :249-253

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