Diffusion behavior at the interface of cladding steels

Masayuki Omichi, Masahide Sato, Tatsuya Tokunaga, Hiroshi Ohtani, Mitsuhiro Hasebe

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Various cladding materials consisting of plain carbon steels with lower carbon concentrations and alloy steels with higher carbon concentrations have been considered to analyze the behavior of interdiffusion across the interface theoretically. The combination of the plain carbon steel and the alloy steel for the cladding was selected to make the chemical potential of carbon greater in the plain carbon steel than in the alloy steel. For the selection, the phase diagrams were computed with Thermo-Calc. The theoretical analysis was carried out using DICTRA that is the software developed at the Royal Institute of Technology in Sweden. The analysis indicates that the up-hill diffusion of carbon spontaneously occurs from the plain carbon steel to the alloy steel during annealing at elevated temperatures. For example, the cladding material composed of a plain carbon steel with a concentration of 0.046 mass%C and a 18Cr-8Ni stainless steel with a concentration of 0.06 mass%C exhibits such an up-hill diffusion at 1200 K, resulting in precipitation of Cr 23C 6 at the cladding interface.

本文言語English
ページ(範囲)1013-1019
ページ数7
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
68
12
DOI
出版ステータスPublished - 2004 12
外部発表はい

ASJC Scopus subject areas

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

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