Enhanced strength and fatigue life of ultra-fine grain Fe-36Ni invar alloy

被引：128

作者：

Vinogradov, A ^{[1
]}

Hashimoto, S

Kopylov, VI

机构：

[1] Osaka City Univ, Fac Engn, Dept Intelligent Mat Engn, Osaka 5588585, Japan

[2] Natl Acad Sci Belarus, Phys Tech Inst, Minsk 220141, BELARUS

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 355卷 / 1-2期

关键词：

invar alloys; severe cold working; mechanical properties; fatigue;

D O I：

10.1016/S0921-5093(03)00082-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanical behavior and fatigue life of ultra-fine grain (UFG) Fe-36%Ni Invar alloy fabricated by severe plastic deformation (SPD) is investigated in both high-cyclic and low-cyclic regimes. A significant enhancement of mechanical properties has been achieved via equal-channel angular pressing (ECAP); the yield stress and the fatigue limit are increased by a factor of three and two, respectively, when compared with those of ordinary Invar alloy with conventional grain size. The fatigue characteristics are determined and tabulated in terms of cyclic stress-strain curves (CSSC), endurance limit, Coffin-Manson and Basquin parameters. It has been shown that the notable improvement of both low-cyclic and high cyclic properties is possible after SPD depending on the processing route. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：277 / 285

页数：9

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