A STUDY OF SERRATED PLASTIC-FLOW BEHAVIOR IN AN ALUMINUM-LITHIUM BINARY ALLOY

被引：17
|
作者：
SUN, DL
YANG, DZ
LEI, TQ
机构：
[1] Dept. of Metals and Technology, Harbin Institute of Technology, Harbin
来源：
MATERIALS CHEMISTRY AND PHYSICS | 1990年 / 25卷 / 03期
关键词：
D O I：
10.1016/0254-0584(90)90075-L
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The serrated plastic flow behavior of an Al-2.73wt%Li alloy at various aging conditions is investigated. The stress-strain curve of the alloy is examined using an Instron machine. The microstructure of the alloy before and after deformation is observed using a transmission electron microscope. It has been shown that the stress-strain curve in the alloy is serrated and both time and/or temperature of aging affect the formation of serrations. The 6′ phase (Al3Li) which is induced by plastic déformation precipitates along dislocations. The formation mechanism of the serrated stress-strain curve in the Al-Li binary alloy is discussed. © 1990.
引用
收藏
页码：307 / 313
页数：7
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