Influence of hetero-duplex structure on mechanical properties of Mg-Al/Cu-Zn alloys

被引：3

作者：

Song, G. A. ^{[1
]}

Kim, T. E. ^{[2
]}

Kim, D. H. ^{[2
]}

Prima, F. ^{[3
]}

Kim, K. B. ^{[1
]}

机构：

[1] Sejong Univ, INAME, Fac Nanotechnol & Adv Mat Engn, Seoul 143747, South Korea

[2] Yonsei Univ, Dept Met Engn, Ctr Non Crystalline Mat, Seoul 120749, South Korea

[3] ENSCP, CNRS, UMR 7045, LPCS Met Struct, F-75231 Paris 05, France

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 528卷 / 01期

关键词：

Metals and alloys; Alloy design; Microstructure; Mechanical properties; Plasticity; Heterogeneity; NANOSTRUCTURE-DENDRITE COMPOSITE; BULK METALLIC GLASSES; COMPRESSIVE PROPERTIES; EUTECTIC COMPOSITES; HIGH-STRENGTH; MICROSTRUCTURE; PLASTICITY; DEFORMATION;

D O I：

10.1016/j.msea.2010.09.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hetero-duplex structure containing both structural and spatial heterogeneities has been developed in a series of Mg-Al/Cu-Zn alloys. Among these alloys, a hetero-duplex Mg72Cu5Zn23 alloy with uniform dispersion of spherical duplex colonies exhibits high yield strength of 455 MPa with a plasticity of similar to 5%. On the contrary, a hetero-duplex Mg70Al3Zn22 alloy consisting of typical polygonal duplex colonies undergoes catastrophic failure without macroscopic plasticity. Based on these results, it is possible to consider that the morphology of the hetero-duplex colony plays an important role to control the macroscopic plasticity of the hetero-duplex alloys. (C) 2010 Elsevier By. All rights reserved.

引用

页码：371 / 378

页数：8

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