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Characterization of Ni3(Si,Ti) intermetalic alloys synthesized by powder metallurgical method

Published online by Cambridge University Press:  07 February 2013

Yuki Miura
Affiliation:
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, Japan
Yasuyuki Kaneno
Affiliation:
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, Japan
Takayuki Takasugi
Affiliation:
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, Japan
Atsushi Kakituji
Affiliation:
Technology Research Institute of Osaka Prefecture, Izumi 594-1157, Japan
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Abstract

A Ni3(Si,Ti) intermetalic alloy was synthesized by the powder metallurgy method using elemental powders. The raw powder mixtures with various compositions were sintered by a spark plasma sintering apparatus and then homogenized at high temperatures. Microstructure, hardness, tensile properties and density of the sintered alloys were investigated as functions of the chemical composition and sintering temperature. It was found that a highly-densified Ni3(Si,Ti) sintered alloy was obtained by choosing proper chemical composition and sintering temperature. Also, the Ni3(Si,Ti) sintered alloy with an L12 single-phase microstructure exhibited high hardness and tensile strength.

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Copyright
Copyright © Materials Research Society 2013 

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References

Takasugi, T., Shindo, D., Izumi, O. and Hirabayashi, M.: Acta metal. mater. 38, 739 (1990).CrossRef
Takasugi, T., Nagashima, M. and Izumi, O.: Acta metal. mater. 38, 745 (1990).
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Nakamura, T., Kaneno, Y., Inoue, H. and Takasugi, T.: Mater. Sci. Eng. A 383, 259 (2004).CrossRef
Imajo, D., Kaneno, Y. and Takasugi, T.: MRS Proceedings Publication 1295, 219 (2011).
Takasugi, T. and Yoshida, M., J. Mater. Sci. 26, 3032 (1991).10.1007/BF01124839CrossRef

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