High-strain-rate superplastic behavior in a super-rapidly-solidified Al-Si system alloy

被引：29
|
作者：
Fujino, S
Kuroishi, N
Yoshino, M
Mukai, T
Okanda, Y
Higashi, K
机构：
[1] Advanced Technology Laboratory, Kubota Co., Ryugasaki City 301
[2] Casting R and D Department, Kubota Co., Osaka 551
[3] Mechanical Engineering Department, Osaka Munic. Tech. Res. Institute, Osaka 536
[4] Dept. of Mech. Systems Engineering, College of Engineering, Osaka Prefecture University, Osaka 593
来源：
SCRIPTA MATERIALIA | 1997年 / 37卷 / 05期
关键词：
D O I：
10.1016/S1359-6462(97)00153-X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High strain rate superplasticity was found in a super-rapidly-solidified aluminum alloy, an as-extruded Al-Si-Fe-Mg-Cu-Ni-Mo alloy fabricated by warm consolidation of its powders which was developed to be a fine-grained structure of 1.4 μm in size with a homogeneous distribution of fine Si particles of 1 μm in size. The large elongation of 275% was recorded at 1 × 10-1 s-1 and at 803K, at which a high m value of 0.5 was obtained. The superplastic strain rate for the Al-Si-Fe-Mg-Cu-Ni-Mo alloy was two or three orders of magnitude higher than that for a conventional superplastic alloy. This result shows clearly a new possibility for development of high strain rate superplasticity in a wear-resisting Al-Si alloys fabricated by super-rapidly-solidified powders.
引用
收藏
页码：673 / 678
页数：6
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