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Microstructure and Mechanical Properties of Dual Two-Phase Intermetallic Alloys Composed of GCP Ni3Al and Ni3V Phases containing Nb

Published online by Cambridge University Press:  26 February 2011

Wataru Soga ,
Yasuyuki Kaneno  and
Takayuki Takasugi
Wataru Soga
Affiliation:
hz501@mtr.osakafu-u.ac.jp, Osaka Prefecture University, Material Science, 1-1, Gakuen-cho, Sakai, 599-8531, Japan
Yasuyuki Kaneno
Affiliation:
kaneno@mtr.osakafu-u.ac.jp, Osaka Prefecture University, Department of Materials Science, Graduate School of Engineering, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
Takayuki Takasugi
Affiliation:
takasugi@mtr.osakafu-u.ac.jp, Osaka Prefecture University, Department of Materials Science, Graduate School of Engineering, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
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Abstract

Dual multi-phase intermetallic alloys composed of Ni3X (X: Al and V) containing Nb were developed, on the basis of the Ni3Al-Ni3Nb-Ni3V pseudo-ternary alloy system. The dual multi-phase intermetallic alloys were characterized by scanning electron and transmission electron microscopies. High-temperature compression and tension tests, and compression creep test were conducted. It was found that the dual multi-phase intermetallic alloys show high yield and tensile strength with good temperature retention, accompanied with reasonable tensile ductility. The compression creep test conducted at high temperature showed lower creep rate in the dual multi-phase intermetallic alloys than in conventional Ni-base superalloys. The obtained results are superior to the dual multi-phase intermetallic alloys containing Ti.

Keywords

microstructurestrengthNi
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – , 2006 , 0980-II05-27
Copyright
Copyright © Materials Research Society 2007

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