MECHANICAL-PROPERTIES AND MICROSTRUCTURES OF AL-MG-SC ALLOYS

被引：180
|
作者：
SAWTELL, RR
JENSEN, CL
机构：
[1] ALCOA Laboratories, Alcoa Center, 15069, PA
来源：
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1990年 / 21卷 / 02期
关键词：
D O I：
10.1007/BF02782422
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanical properties of Al-(Mg)-0.5Sc alloys have been investigated. Room-temperature tensile and toughness properties were found to reflect a superposition of the properties of Al-Mg and Al-0.5Sc alloys and are quite competitive with high-performance Al alloys. A combination of substructure refinement by Mg and stabilization by Al3Sc precipitates produces exceptional superplasticity as exemplified by superplastic forming (SPF) elongations in excess of 1000 pct at a strain rate of 0.01 s-1. Overall, these alloys demonstrate an extremely attractive combination of strength, toughness, density, and SPF fabricability. © 1990 The Minerals, Metals & Materials Society - ASM International - The Materials Information Society.
引用
收藏
页码：421 / 430
页数：10
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