Effect of temperature on the fracture mechanisms of 8090 Al-Li alloy and 8090 Al-Li/SiC composite

被引：13
|
作者：
González, C [1 ]
Martín, A [1 ]
Llorca, J [1 ]
机构：
[1] Univ Politecn Madrid, ETS Ingn Caminos, Dept Mat Sci, E-28040 Madrid, Spain
来源：
SCRIPTA MATERIALIA | 2004年 / 51卷 / 11期
关键词：
Al-Li alloys; metal matrix composites; temperature; fracture;
D O I：
10.1016/j.scriptamat.2004.07.025
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The fracture mechanisms in tension were analyzed in a peak-aged 8090 Al-Li alloy and 8090 Al-Li/SiC as a function of temperature. Failure in the alloy changed from intergranular fracture at ambient temperature to ductile void growth above 150 degreesC, leading to a tenfold increase in the elongation to failure. Damage in the composite was always nucleated by particle fracture, and the ductility, which was controlled by the onset of plastic instability, increased moderately with temperature. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1111 / 1115
页数：5
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