Effect of equal channel angular pressing on the distribution of reinforcements in the discontinuous metal matrix composites

被引：16

作者：

Chang, SY ^{[1
]}

Lee, KS

Ryu, SK

Park, KT

Shin, DH

机构：

[1] Hanyang Univ, Dept Met & Mat Sci, Ansan 425791, South Korea

[2] Hankuk Aviat Univ, Dept Mat Engn, Koyang 412791, South Korea

[3] Digital Plating Co, Seoul, South Korea

[4] Hanbat Natl Univ, Div Adv Mat Sci & Engn, Taejon 305719, South Korea

来源：

MATERIALS TRANSACTIONS | 2002年 / 43卷 / 04期

关键词：

composites; powder metallurgy; equal channel angular pressing; 6061; Al; SiC whisker;

D O I：

10.2320/matertrans.43.757

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The 6061 Al-10 vol% SiCw composites were prepared by powder metallurgy with the powders having the different sizes, i.e. < 30mum and 30mum <. The composites were subjected to equal channel angular pressing (ECAP) under various conditions and the microstuctural changes during ECAP were examined, A special focus was made on the effect of ECAP conditions on the distribution of SiC whiskers. The present investigation was aimed at exploring the feasibility of ECAP as a post working process for manufacturing the discontinuous metal matrix composites. The microstructural examination and the microhardness measurement of the ECAPed samples suggested that the optimum combination of the uniform microstructure and enhanced mechanical properties would be obtained by (a) using the powders having the smaller size, (b) decreasing ECAP temperature, and (c) repeating ECAP.

引用

页码：757 / 761

页数：5