Superplasticity and internal friction in microcrystalline AZ91 and ZK60 magnesium alloys processed by equal-channel angular pressing

被引：53

作者：

Chuvil'deev, V

Nieh, TG

Gryaznov, MY

Kopylov, VI

Sysoev, AN

机构：

[1] Nizhnii Novgorod State Univ, Res Phys & Tech Inst, Nizhnii Novgorod 603950, Russia

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 378卷 / 1-2期

关键词：

metals; grain boundaries; acoustic properties; strain;

D O I：

10.1016/j.jallcom.2003.10.062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Low-temperature superplasticity (LTSP) and internal friction in microcrystalline ZK60 and AZ91 magnesium alloys processed by equal-channel angular pressing (ECAP) are reported. Excellent low-temperature superplasticity (<300degreesC) was observed in ECAP-processed materials: elongations to failure are 810 and 570% in ZK60 and AZ91 alloys, respectively, at a strain rate of 3 x 10(-3) S-1. Internal friction can be practically used to determine the optimum temperature for superplasticity. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：253 / 257

页数：5

共 16 条

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Chuvil'deev V. N., 2000, Physics of Metals and Metallography, V89, P122

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