A two-step processing route for achieving a superplastic forming capability in dilute magnesium alloys

被引：147

作者：

Horita, Z

Matsubara, K

Makii, K

Langdon, TG ^{[1
]}

机构：

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

[2] Kyushu Univ, Dept Mat Sci & Engn, Fac Engn, Fukuoka 8128581, Japan

[3] Kobe Steel Ltd, Mat Res Labs, Nishi Ku, Kobe, Hyogo 6512271, Japan

来源：

SCRIPTA MATERIALIA | 2002年 / 47卷 / 04期

基金：

日本学术振兴会;

关键词：

equal-channel angular pressing; high temperature mechanical properties; magnesium alloy; microstructure; superplasticity;

D O I：

10.1016/S1359-6462(02)00135-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Superplastic ductilities were achieved in a dilute magnesium alloy containing 0.6% Zr through the use of a two-step processing procedure in which the basal planes are initially aligned through extrusion and the grain size is then relined using equal-channel angular pressing. The results show a maximum tensile elongation of >400% at 573 K when using an initial strain rate of 3.3 x 10(-4) s(-1). (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：255 / 260

页数：6

共 31 条

[1] DIPLAS S, 1998, MAGNESIUM ALLOYS THE, P575
[2] DRESSEL CF, 1995, SUPERPLASTICITY 60 Y, P359
[3] The shearing characteristics associated with equal-channel angular pressing
Furukawa, M
Iwahashi, Y
Horita, Z
Nemoto, M
Langdon, TG
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 257 (02): : 328 - 332
[4] Review: Processing of metals by equal-channel angular pressing
Furukawa, M
Horita, Z
Nemoto, M
Langdon, TG
[J]. JOURNAL OF MATERIALS SCIENCE, 2001, 36 (12) : 2835 - 2843
[5] Furukawa M, 2001, ADV ENG MATER, V3, P121, DOI 10.1002/1527-2648(200103)3:3<121::AID-ADEM121>3.0.CO
[6] 2-V
[7] HILPERT M, 1998, MAGNESIUM ALLOYS THE, P319
[8] An investigation of grain boundaries in submicrometer-grained Al-Mg solid solution alloys using high-resolution electron microscopy
Horita, Z
Smith, DJ
Furukawa, M
Nemoto, M
Valiev, RZ
Langdon, TG
[J]. JOURNAL OF MATERIALS RESEARCH, 1996, 11 (08) : 1880 - 1890
[9] Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy
Horita, Z
Smith, DJ
Nemoto, M
Valiev, RZ
Langdon, TG
[J]. JOURNAL OF MATERIALS RESEARCH, 1998, 13 (02) : 446 - 450
[10] The process of grain refinement in equal-channel angular pressing
Iwahashi, Y
Horita, Z
Nemoto, M
Langdon, TG
[J]. ACTA MATERIALIA, 1998, 46 (09) : 3317 - 3331

← 1 2 3 4 →