Strength differential effect in SiCp reinforced Al composites

被引：2

作者：

Varma, VK

Kamat, SV

Mahajan, YR

Kutumbarao, VV

机构：

[1] Def Met Res Lab, Mech Behav Grp, Hyderabad 500058, Andhra Pradesh, India

[2] Int Adv Res Ctr, Hyderabad, Andhra Pradesh, India

[3] Jawaharlal Nehru Aluminium Res Dev & Design Ctr, Nagpur, Maharashtra, India

来源：

ZEITSCHRIFT FUR METALLKUNDE | 2002年 / 93卷 / 09期

关键词：

Al composites; strength differential effect; residual stresses; work hardening;

D O I：

10.3139/146.020910

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The strength differential (SD) effect as a function of plastic strain in SiCp reinforced Al-Cu-Mg alloy matrix composites with varying reinforcement sizes was investigated. Matrix alloy was also produced in a similar manner for comparison and designated as Control. All the materials exhibited significantly negative SD at very low plastic strains. The magnitude of the negative SD decreased and eventually became positive with increasing plastic strain. All the metal matrix composites exhibited a higher negative SD below and a higher positive SD above 0.35% plastic strain as compared to Control. The observed results were attributed to the nature, magnitude and distribution of thermal residual stresses in the matrix of MMCs and work hardening during deformation.

引用

页码：910 / 912

页数：3