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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.48  No.11 (2007)  >  pp.2993-2996

MATERIALS TRANSACTIONS
<<Previous article Vol.48  No.11 (2007)   pp.2993 - 2996 Next article>>

Formation of (B2+D03) Two-Phase Microstructure in a Fe-23 Al-7 Ti Alloy

Chun-Wei Su1), Chuen-Guang Chao1) and Tzeng-Feng Liu1)
1) National Chiao Tung University

As-quenched microstructure of the Fe-23 at% Al-7 at% Ti alloy was a mixture of (A2+D03) phases. When the as-quenched alloy was aged at 1073 K for moderate times, D03 domains grew preferentially along ⟨100⟩ directions and extremely fine B2 particles occurred at a/2⟨100⟩ anti-phase boundaries (APBs). After prolonged aging at 1073 K, the B2 particles would grow to occupy the whole a/2⟨100⟩ APBs. Consequently, the stable microstructure of the alloy at 1073 K was a mixture of (B2+D03) phases.


Keyword:
phase transformation, electron microscopy, microstructure

Received: June 14, 2007
Accepted: August 24, 2007 , Published online: October 25, 2007
Copyright (c) 2007 The Japan Institute of Metals

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