Densification of Al-Y2O3 composite powder by equal channel angular pressing

被引：13

作者：

Yarra, Ramu ^{[1
]}

Venkatachalam, P. ^{[1
]}

Kumar, S. Ramesh ^{[1
]}

Ravisankar, B. ^{[1
]}

Jayasankar, K. ^{[1
]}

Mukherjee, P. S. ^{[2
]}

机构：

[1] Natl Inst Technol, Dept Met & Mat Engn, Tiruchirappalli 620015, Tamil Nadu, India

[2] Inst Minerals & Mat Engn CSIR, Adv Mat Technol Dept, Bhubaneswar 751013, Orissa, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2010年 / 63卷 / 05期

关键词：

Al-Yttria composites; back pressure ECAP; Nano Indentation; load - stroke diagrams; mechanical alloying;

D O I：

10.1007/s12666-010-0124-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this study, equal channel angular pressing (ECAP) with and without back pressure was used for consolidation of fine mechanically alloyed Al-Yttria composite powder. The effect of ECAP on consolidation behaviour of powder, microstructure, density and hardness is discussed. The powder was encapsulated in an aluminium can. Room temperature back pressure aided ECAP results in a nearly full denser (97% of its theoretical density) compact at room temperature. Nano Indentation technique was used to determine the modulus of the ECAP consolidated compact.

引用

页码：813 / 817

页数：5

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