Phase Equilibrium between B2 Aluminide NiAl and Nb-Mo bcc Solid Solution Phase

Seiji Miura; Yoshihito Sekito; Takuya Okawa; Takuya Yamanouchi; Tetsuo Mohri

doi:10.4028/www.scientific.net/MSF.783-786.1171

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Phase Equilibrium between B2 Aluminide NiAl and...

Phase Equilibrium between B2 Aluminide NiAl and Nb-Mo bcc Solid Solution Phase

Abstract:

In order to understand the composition of the Nb-Mo bcc phase suitable to introduce B2-NiAl phase for the improvement of oxidation resistance as an Al reservoir layer for maintaining Al₂O₃ surface layer, a NiAl-Nb-Mo section of the quaternary Al-Nb-Ni-Mo phase diagram is studied. It is found that the ternary τ₂ phase appears in wide composition range of alloys, both the hardness and cracking tendency decreases with increasing the Mo concentration of the alloys.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

1171-1175

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.1171

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Online since:

May 2014

Authors:

Seiji Miura*, Yoshihito Sekito, Takuya Okawa, Takuya Yamanouchi, Tetsuo Mohri

Keywords:

Hardness, Phase Equilibrium, Quaternary Phase Diagram, Toughness

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