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Alloying Effect of Vanadium Upon Structure and Strength of σ-Phase Titanium Trialuminide

Published online by Cambridge University Press:  15 February 2011

Tohru Takahashi ,
Kenji Iwami  and
TAdashi Hasegawa
Tohru Takahashi
Affiliation:
Department of Mechanical Systems Engineering, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, JAPAN
Kenji Iwami
Affiliation:
Graduate Student, Tokyo University of Agriculture and Technology
TAdashi Hasegawa
Affiliation:
Department of Mechanical Systems Engineering, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, JAPAN
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Abstract

The alloying effect of vanadium upon σ-phase titanium trialuminide has been investigated using materials whose compositions were of the type Al3(Ti,V). Six types of ternary aluminum-titanium-vanadium alloys, ranging from Al3Ti to Al3V at 5 atomic % intervals, have been prepared by arc melting. All the materials showed the D022 tetragonal structure, suggesting vanadium atoms substitute titanium atoms. The 0.2% proof stress increased with increasing vanadium content up to about 10 atomic %, and then decreased toward that of Al3V both at room temperature and at elevated temperatures. Such behavior can be interpreted as substitutional solid solution strengthening.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 460: Symposium Z – High-Temperature Ordered Intermetallic Alloys VII , 1996 , 91
Copyright
Copyright © Materials Research Society 1997

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References

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