Ductility of Ni3Al doped with substitutional elements

S. Hanada, A. Chiba, H. Z. Guo, S. Watanabe

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

This paper reports on ductility of B-free Ni3Al alloys. Recrystallized Ni3Al binary alloys with Ni-rich compositions show appreciable ductility when an environmental effect is eliminated, while the alloys with stoichiometric and Al-rich compositions remain brittle. The ductility in the Ni-rich Ni3Al alloys is associated with low ordering energy. The additions of ternary elements, which are classified as γ formers, ductilize ternary Ni3Al alloys(Ni-23 at%Al-2 at%X, X=Pd, Pt, Cu and Co), whereas the additions of γ′ formers embrittle ternary Ni3Al alloys(Ni-23 at%Al-2 at%X, X=Ta, Mo, Nb, Zr, Hf, V, Ti and Si). The additions of small amounts (less than 1 at%) of γ′ formers such as Zr and Hf also ductilize as-cast ternary Ni3Al alloys. Ductility of Ni3Al alloys doped with substitutional elements is discussed in terms of ordering energy and microstructure.

本文言語English
ホスト出版物のタイトルProceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials
編集者N.S. Stoloff, D.J. Duquette, A.F. Giamei
出版社Publ by Minerals, Metals & Materials Soc (TMS)
ページ227-236
ページ数10
ISBN(印刷版)0873391993
出版ステータスPublished - 1993 12月 1
イベントProceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials - Kona, HI, USA
継続期間: 1993 3月 71993 3月 14

出版物シリーズ

名前Proceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials

Other

OtherProceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials
CityKona, HI, USA
Period93/3/793/3/14

ASJC Scopus subject areas

  • 工学(全般)

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