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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.42  No.9 (2001)  >  pp.1998-2002

MATERIALS TRANSACTIONS
<<Previous article Vol.42  No.9 (2001)   pp.1998 - 2002 Next article>>

Plastic Deformation by Slip on (001)[100] in Ni3Nb Single Crystals with D0a Structure

Koji Hagihara1), Takayoshi Nakano1) and Yukichi Umakoshi1)
1) Department of Materials Science and Engineering, Graduate School of Engineering, Osaka University

Plastic deformation by slip on (001)[100] in Ni3Nb single crystals was investigated. The yield stress, strain rate sensitivity of the flow stress, shape of the stress-strain curve, morphology of slip markings and deformation substructures varied strongly depending on temperature. Temperature dependence of their behavior was classified into three regions. Anomalous increase in the yield stress was observed between 500 and 800°C. The anomalous strengthening is caused by dynamic strain aging, the so called Portevin-Le Chatelier effect.


Keyword:
deformation, intermetallic compound, mechanical property, anomalous strengthening, dislocation, slip

Received: May 10, 2001
Accepted: July 23, 2001 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals

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