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

页码：673 / 678

页数：6

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