Diffusion of Cr and Fe in a high-purity Fe-50 mass% Cr-8 mass% W alloy

Koichi Takasawa, Yoshihiro Yamazaki, Seiichi Takaki, Kenji Abiko, Yoshiaki Iijima

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Volume and grain boundary diffusivities of 51Cr and 59Fe in a high purity Fe-50 mass% Cr-8 mass% W (Fe-50Cr-8W) alloy have been determined in the temperature range between 1023 and 1373 K with the sputter-microsectioning technique. The volume diffusion coefficients of Cr and Fe in the Fe-50Cr-8W alloy are smaller than those in a high-purity Fe-50 mass% Cr (Fe-50Cr) alloy. Linear Arrhenius lines for the volume self-diffusion coefficients of both tracers have been observed in the temperature range examined. The activation energies for the volume diffusion of both components in the Fe-50Cr-8W alloy are somewhat smaller than those in the Fe-50Cr alloy. On the other hand, the grain boundary diffusivities of Cr and Fe in the Fe-50Cr-8W alloy at 1123 K are about two orders of magnitude smaller than those in the Fe-50Cr alloy.

Original languageEnglish
Pages (from-to)178-181
Number of pages4
JournalMaterials Transactions
Volume43
Issue number2
DOIs
Publication statusPublished - Feb 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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