Tensile fracture behavior of foamed metallic materials

被引：24
|
作者：
Liu, PS [1 ]
机构：
[1] Beijing Normal Univ, Dept Mat Sci & Engn, Key Lab Beam Technol & Mat Modificat, Minist Educ, Beijing 100875, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 384卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
metal foams; foamed metals; porous metals; porous materials;
D O I：
10.1016/j.msea.2004.06.038
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Foamed metallic materials can be used as many structural parts. The tensile experiment was carried out on this porous body, and the elementary mechanism of the corresponding fracture behavior is analyzed in the present paper. It is found that the macroscopical fracture feature of this foamed metallic material with open cells differs not only from that of the transverse rupture by maximum tensile-stress criterion, but also from that of the plastic-flow failure by maximum shearing-stress criterion, and presents a complicated mode of fracture between these two criterions. The necking-down appearance was not observable during the tensile fracture, and the percentage elongation (apparent strain) resulted primarily from the plastic deflexion of metallic struts within the three-dimensional reticulated structure. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：352 / 354
页数：3
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