Ductility of Ni3Al doped with substitutional elements

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials
EditorsN.S. Stoloff, D.J. Duquette, A.F. Giamei
PublisherPubl by Minerals, Metals & Materials Soc (TMS)
Pages227-236
Number of pages10
ISBN (Print)0873391993
Publication statusPublished - 1993 Dec 1
EventProceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials - Kona, HI, USA
Duration: 1993 Mar 71993 Mar 14

Publication series

NameProceedings 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

  • Engineering(all)

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    Hanada, S., Chiba, A., Guo, H. Z., & Watanabe, S. (1993). Ductility of Ni3Al doped with substitutional elements. In N. S. Stoloff, D. J. Duquette, & A. F. Giamei (Eds.), Proceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials (pp. 227-236). (Proceedings from the Conference on Critical Issues in the Development of High Temperature Structural Materials). Publ by Minerals, Metals & Materials Soc (TMS).