Sinterability of Intermetallic Compound NiAl Powder and Its Mechanical Properties

Katsuhiro Nishiyama; Yuichi Yoshida; Masashi Mohri; Noburu Eguchi; Sokichi Umekawa; Shuji Shite

doi:10.2497/jjspm.38.10

Journal of the Japan Society of Powder and Powder Metallurgy

Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799

Sinterability of Intermetallic Compound NiAl Powder and Its Mechanical Properties

Katsuhiro Nishiyama, Yuichi Yoshida, Masashi Mohri, Noburu Eguchi, Sokichi Umekawa, Shuji Shite

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JOURNAL FREE ACCESS

1991 Volume 38 Issue 1 Pages 10-13

DOI https://doi.org/10.2497/jjspm.38.10

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Abstract

Sinterability of NiAl powder with the composition of Ni-49.4at%Al prepared by a self-propagating high-temperature synthesis(SHS) method were examined in a hot-pressing process. The sintered compacts with density of 97-99% were obtained by a hot-pressing at 1200 to 1400°C for 0.5hr under a pressure of 60MPa in vacuum. The bending strength of sintered NiAl hot-pressed at 1200°C reaches a maximum value of 1080MPa. The room-temperature strength of NiAl is strongly dependent on grain sizes.

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