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.
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收藏
页码：421 / 430
页数：10
相关论文
共 23 条
  • [1] BAKER C, 1986, ALUMINUM LITHIUM ALL, V3
  • [2] CONSTITUTION AND AGE HARDENING OF AL-SC ALLOYS
    BLAKE, N
    HOPKINS, MA
    [J]. JOURNAL OF MATERIALS SCIENCE, 1985, 20 (08) : 2861 - 2867
  • [3] Drits M.D., 1983, METALLOVED TERM OBBR, V7, P60
  • [4] Drits M. E., 1981, Soviet Physics - Doklady, V26, P344
  • [5] ELAGIN VI, 1983, METALLY TERM OBBRAB, V7, P57
  • [6] SOLID SOLUBILITY AND RESIDUAL RESISTIVITY OF SCANDIUM IN ALUMINUM
    FUJIKAWA, SI
    SUGAYA, M
    TAKEI, H
    HIRANO, K
    [J]. JOURNAL OF THE LESS-COMMON METALS, 1979, 63 (01): : 87 - 97
  • [7] SUPERPLASTICITY IN LARGE GRAINED MATERIALS
    GRIFFITHS, P
    HAMMOND, C
    [J]. ACTA METALLURGICA, 1972, 20 (07): : 935 - +
  • [8] HENSHALL CA, 1985, SAMPE ADV TECHNOLOGY, V30, P994
  • [9] Hildeman Gregory J, 1983, United States patent, Patent No. [US 4 379 719, 4379719]
  • [10] KAHN NA, 1956, WELDING RES S, pS217
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