Interdiffusion in L1 2-Ni 3Al Alloyed with Re

N. Garimella, M. Ode, M. Ikeda, H. Murakami, Y. H. Sohn

研究成果: Article査読

9 被引用数 (Scopus)

抄録

Ternary interdiffusion in L1 2-Ni 3Al with ternary alloying addition of Re was investigated at 1473 K using solid-to-solid diffusion couples. Interdiffusion flux of Ni, Al, and Re were directly calculated from experimental concentration profiles and integrated for the determination of average ternary interdiffusion coefficients. The magnitude of main interdiffusion coefficients D̄̃ NiNi Al and D̄̃ AlAl Ni was determined to be much larger than that of the main interdiffusion coefficient D̄̃ ReRe Al(orNi) A moderate tendency for Re to substitute for Al sites was reflected by its influence on interdiffusion of Al, quantified by large and positive D̄̃ AlRe Ni coefficients. Similar trends were observed from ternary interdiffusion coefficients determined by Boltzmann-Matano analysis. Profiles of concentrations and interdiffusion fluxes were also examined to estimate binary interdiffusion coefficients in Ni 3Al, and tracer diffusion coefficients of Re (5.4 × 10 -16 ± 2.3 × 10 -16 m 2/s) in Ni 3Al.

本文言語English
ページ(範囲)246-253
ページ数8
ジャーナルJournal of Phase Equilibria and Diffusion
30
3
DOI
出版ステータスPublished - 2009 6
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 金属および合金
  • 材料化学

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