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Development of Dual Multi-Phase Intermetallic Alloys Composed of Geometrically Close Packed Ni3X(X:Al and V) Structures

Published online by Cambridge University Press:  26 February 2011

Takayuki Takasugi  and
Yasuyuki Kaneno
Takayuki Takasugi
Affiliation:
takasugi@mtr.osakafu-u.ac.jp, Osaka Prefecture University, Department of Materials Science, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531, Japan, 81-72-254-9314, 81-72-254-9912
Yasuyuki Kaneno
Affiliation:
kaneno@mtr.osakafu-u.ac.jp, Osaka Prefecture University, Department of Materials Science, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
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Abstract

Dual multi-phase intermetallic alloys composed of Ni3Al (L12)+Ni3V (D022) phases were developed, based on the Ni3Al-Ni3Ti-Ni3V pseudo-ternary alloy system. High-temperature tensile deformation, fracture behavior, and compression and tension creep were investigated using polycrystalline and single crystalline materials. The alloys with such a novel microstructure show extremely high yield and tensile strength with good temperature retention, and also reasonable tensile ductility. Also, creep test conducted at high temperature showed extremely low creep rate and long creep rupture time. The obtained results are promising for the development of a new-type of high-temperature structural material exceeding conventional superalloys.

Keywords

microstructureNistrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II08-02
Copyright
Copyright © Materials Research Society 2007

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References

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