Compressive deformation of an Mg-Al-Si-RE alloy between 120 and 180 °C

被引：18

作者：

Spigarelli, S ^{[1
]}

Ciccarelli, D ^{[1
]}

Evangelista, E ^{[1
]}

机构：

[1] Univ Ancona, INFM, Dept Mech, I-60131 Ancona, Italy

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 3-4期

关键词：

deformation and fracture; mechanical properties; metals and alloys; microstructure;

D O I：

10.1016/S0167-577X(03)00525-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The deformation behaviour of an Mg-Al-Si-RE (ASE210) alloy between 120 and 180 degreesC was investigated by means of uniaxial compression tests to identify possible differences in the deformation response compared with uniaxial tensile data. Early fracture was observed in the low-temperature/high strain rate regime, fracture occurring by crack propagation at 45degrees with respect to the compression axis. in the high-temperature/low strain rate regime, the flow curves exhibited the typical shape that is usually observed in materials where deformation is controlled by recovery of substructure. The peak flow stresses obtained in this regime of temperature and strain rate were compared with other data obtained by testing the same alloy in tension. The strength of the alloy was found to be slightly greater in compression than in tension, this difference gradually disappearing as strain rate decreased. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：460 / 464

页数：5

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