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

被引：183

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

页码：421 / 430

页数：10