MODEL FOR HOT COMPACTION OF METAL POWDERS

被引：6
|
作者：
KIM, KT
SUH, J
机构：
[1] Department of Mechanical Engineering, Pohang Institute of Science and Technology, Pohang
来源：
POWDER METALLURGY | 1990年 / 33卷 / 01期
关键词：
D O I：
10.1179/pom.1990.33.1.40
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A mathematical model is proposed to describe the variation with time of pressure, relative density, and temperature for metal powders during hot compaction. The model includes instantaneous response, equilibrium response, and creep response and is based on a micromechanical (hollow sphere) analysis. However, the development is mostly empirical, based on experimental data from hot compaction of iron powder. The instantaneous and equilibrium responses are described by linear response laws, whereas time dependent densification is described by a power law creep response. The experimental data support these assumptions. Agreement between theoretical curves and experimental data is very good. PM/0500. © 1990 Maney Publishing.
引用
收藏
页码：40 / 44
页数：5
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