Effect of equal-channel angular pressing (ECAP) on creep in aluminium alloys

被引：31

作者：

Sklenicka, V. ^{[1
]}

Dvorak, J. ^{[1
]}

Kvapilova, M. ^{[1
]}

Svoboda, M. ^{[1
]}

Kral, P. ^{[1
]}

Saxl, I. ^{[2
]}

Horita, Z. ^{[3
]}

机构：

[1] Acad Sci Czech Republic, Inst Phys Mat, Zizkova 22, CZ-61662 Brno, Czech Republic

[2] Acad Sci Czech Republic, Math Inst, CZ-11567 Prague, Czech Republic

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

来源：

THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷

关键词：

equal-channel angular pressing (ECAP); aluminium alloys; ultrafine-grained microstructure; creep behaviour;

D O I：

10.4028/www.scientific.net/MSF.539-543.2904

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper examines the effect of equal-channel angular pressing (ECAP) on creep behaviour of pure aluminium, binary Al-0.2wt.%Sc alloy and ternary Al-3wt.%Mg-0.2wt.%Sc alloy. The ECAP was conducted at room temperature with a die that had a 90 degrees angle between the channels and 8 repetitive ECAP passes followed route B-C. Constant stress compression creep tests were performed at 473 K and stresses ranging between 16 to 80 MPa on ECAP materials and, for comparison purposes, on the initial coarse-grained materials. The results showed that the creep resistance of the ECAP processed Al-Sc and Al-Mg-Sc alloys was markedly deteriorated with respect to unpressed coarse-grained materials.

引用

页码：2904 / +

页数：2

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