Low-temperature superplasticity and internal friction in microcrystalline Mg alloys processed by ECAP

被引：114

作者：

Chuvil'deev, VN

Nieh, TG

Gryaznov, MY

Sysoev, AN

Kopylov, VI

机构：

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

[2] Nizhny Novgrod State Univ, Res Phys & Tech Inst, Nizhnii Novgorod 603950, Russia

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

来源：

SCRIPTA MATERIALIA | 2004年 / 50卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

Mg alloys; severe plastic deformation; low-temperature superplasticity; internal friction;

D O I：

10.1016/j.scriptamat.2003.12.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Excellent low-temperature superplasticity (<300 degreesC) was observed in the ECAP-processed materials: elongations to failure are 810% and 570% at a strain rate of 3 x 10(-3) s(-1) for ZK60 and AZ91 alloys, respectively. Internal friction can be practically used to determine the optimum temperature for superplasticity. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：861 / 865

页数：5

共 18 条

[1]

AVEDISIAN M, 1999, ASM SPECIALITY HDB

[2]

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

[3] A theory of non-equilibrium grain boundaries and its applications to nano- and micro-crystalline materials processed by ECAP [J].