Effect of Pb on the mechanical properties of nanocrystalline Al

被引：30
作者：
Rajulapati, Koteswararao V.
Scattergood, Ronald O.
Murty, Korukonda L.
Duscher, Gerd
Koch, Carl C.
机构：
[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
[2] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA
来源：
SCRIPTA MATERIALIA | 2006年 / 55卷 / 02期
基金：
美国国家科学基金会;
关键词：
nanocrystalline materials; ball milling; second phase; Al-Pb; microhardness;
D O I：
10.1016/j.scriptamat.2006.03.051
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanocrystalline (nc) Al-Pb two phase mixtures of different Pb concentrations were made by two different routes using high energy ball milling. The microhardness measurements show a softening in nc Al-Pb composites with the increase in Pb content, contradicting the previous results reported in the literature. We conclude that interaction of Pb atoms with nanocrystalline Al grain boundaries is responsible for the softening of the nc Al matrix observed in the current study. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：155 / 158
页数：4
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