Ductility enhancement in NiAl (B2)-base alloys by microstructural control

K. Ishida, R. Kainuma, N. Ueno, T. Nishizawa

Research output: Contribution to journalArticle

191 Citations (Scopus)

Abstract

An attempt to improve ductility of NiAl (B2)-base alloys has been made by the addition of alloying elements and the control of microstructure. It has been found that a small amount of fcc γ phase formed by the addition of Fe, Co, and Cr has a drastic effect not only on the hot workability but also on the tensile ductility at room temperature. The enhancement in ductility is mainly due to the modification of Β-phase grains by the coexistence of γ phase. The effect of alloying elements on the hot forming ability is strongly related to the phase equilibria and partition behavior among γ, γ′ (L12 structure), and Β phases in the Ni-Al-X alloy systems. The ductility-enhancement method shows promise for expanding the practical application of nickel aluminide.

Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalMetallurgical Transactions A
Volume22
Issue number2
DOIs
Publication statusPublished - 1991 Feb 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Ductility enhancement in NiAl (B2)-base alloys by microstructural control'. Together they form a unique fingerprint.

  • Cite this