Relationship between hardness and tensile tests in titanium reinforced with yttria nanoparticles

被引：13

作者：

de Castro, V ^{[1
]}

Leguey, T ^{[1
]}

Muñoz, A ^{[1
]}

Monge, MA ^{[1
]}

Pareja, R ^{[1
]}

机构：

[1] Univ Carlos III Madrid, Dept Fis, Leganes, Spain

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 400卷

关键词：

titanium matrix composites; yttrja nanoparticles; mechanical properties; microhardness;

D O I：

10.1016/j.msea.2005.03.070

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ Ti/Y2O3 nanocomposites have been developed and characterized, and the strengthening effects of the fine Y2O3 dispersion investigated. Samples, containing 0.3-0.7 wt.% of Y2O3 were prepared by arc melting technique. TEM analyses performed on as-cast and recrystallization annealed samples reveal the presence of a homogeneous dispersion of Y2O3 particles with sizes < 100 nm. The mechanical properties have been determined by microhardness measurements and tensile tests. The hardness of the composites increases by a factor of 2 with respect to unalloyed Ti. Comparison between microhardness and tensile stress values follows the Tabor relationship. The validity of the relationship obtained between microhardness and tensile properties for nanocomposites is discussed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：345 / 348

页数：4

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