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Effect of W addition on microstructure and mechanical properties of Ni base dual two-phase intermetallic alloys

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Abstract

The effect of W addition on microstructure and mechanical properties of Ni3Al (L12) and Ni3V (D022) two-phase intermetallic alloys has been investigated. W was added to the base alloy composition, Ni75Al10V12Nb3 (at. %) in place of either Ni, Al or V. The W-added alloy ingots were heat-treated in vacuum at 1575 K for 5 h. The majority of W-added alloys showed a dual two-phase microstructures while the alloy in which 3 at. % W substituted for Ni exhibited the dual two-phase microstructure containing W solid solution dispersions. Vickers hardness was significantly enhanced by W addition, which is primarily due to solid-solution strengthening.

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Acknowledgements

This work was supported in part by Grant-in-aid for Scientific Research for the Ministry of Education, Culture, Sports and Technology.

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Authors and Affiliations

  1. Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 599-8531, Sakai, Japan

    Daisuke Edatsugi, Yasuyuki Kaneno, Hiroshi Numakura & Takayuki Takasugi

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  1. Daisuke Edatsugi
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  2. Yasuyuki Kaneno
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  3. Hiroshi Numakura
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  4. Takayuki Takasugi
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Edatsugi, D., Kaneno, Y., Numakura, H. et al. Effect of W addition on microstructure and mechanical properties of Ni base dual two-phase intermetallic alloys. MRS Online Proceedings Library 1760, 181–186 (2014). https://doi.org/10.1557/opl.2015.118

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