Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering

M. Shimada, H. Kokawa, Z. J. Wang, Y. S. Sato, I. Karibe

研究成果: Article査読

474 被引用数 (Scopus)

抄録

The effects of process parameters, pre-strain, annealing temperature, time, etc. on grain boundary character distribution (GBCD) and intergranular corrosion in thermomechanical treatment were examined during grain boundary engineering of type 304 austenitic stainless steel. Slight pre-strain annealing at a relatively low temperature resulted in excellent intergranular corrosion resistance due to optimized GBCD, i.e. the uniform distribution of a high frequency of coincidence site lattice boundaries and consequent discontinuity of random boundary network in the material. The optimum distribution can be formed by introduction of low energy segments on migrating random boundaries during twin emission and boundary-boundary reactions in the grain growth without generation of new random boundaries.

本文言語English
ページ(範囲)2331-2341
ページ数11
ジャーナルActa Materialia
50
9
DOI
出版ステータスPublished - 2002 5 24

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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