TOUGHNESS CHARACTERIZATION OF IRON-BASED POWDER MATERIAL

被引：7
|
作者：
MALYSHENKO, AA
PODREZOV, YN
FIRSTOV, SA
机构：
[1] Frantsevich Institute for Problems of Material Science (IPMS), Ukranian Academy of Sciences, Kiev -142
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 1994年 / 21卷 / 02期
关键词：
D O I：
10.1016/0167-8442(94)00029-8
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fracture mode dependence on the material structure is applied to characterize the fracture toughness of iron-based powder material. The porosity parameter is varied to exhibit the change in the observed fracture mechanism and hence the fracture toughness of powder materials. Useful information is obtained to enhance the production technology in terms of porosity content and inter-particle contacts. The proposed simulation procedure provides data that are in good agreement with experiments and makes it possible to predict the mechanical behavior of powder materials with different structures. Complex dependence of fracture toughness on the porosity of powder materials is reflected by competing microfracture mechanisms and inherent peculiar behavior of the compacting powder.
引用
收藏
页码：101 / 106
页数：6
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