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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.46  No.10 (2005)  >  pp.2287-2290

MATERIALS TRANSACTIONS
<<Previous article Vol.46  No.10 (2005)   pp.2287 - 2290 Next article>>

Development of Constitutive Equation on Superplastic RS P/M Mg–Y–Zn Alloy

Masato Tsujikawa1), Hidetoshi Somekawa1), Sung Wook Chung1) and Kenji Higashi1)
1) Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University

A constitutive equation of rapid solidification (RS) powder metallurgy (P/M) magnesium alloy was constructed analytically from normalized strain rate-stress plots. Data related to RS P/M magnesium alloy showed deviation from those of conventional superplastic magnesium alloys; they indicated greater strength or lower strain rates than conventional superplastic magnesium alloys because the grains have a unique structure on superplastic flow. A constitutive equation for superplastic flow was developed using a metal matrix composite model.


Keyword:
constitutive equation, magnesium-zinc-yttrium alloy, magnesium alloy, superplasticity, metal matrix composite

Received: July 04, 2005
Accepted: August 17, 2005 , Published online: November 14, 2005
Copyright (c) 2005 The Japan Institute of Metals

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