Grain boundary engineering of 304 austenitic stainless steel by laser surface melting and annealing

Sen Yang, Zhan Jie Wang, Hiroyuki Kokawa, Yutaka S. Sato

研究成果: Article査読

41 被引用数 (Scopus)

抄録

In order to improve the intergranular corrosion resistance of 304 stainless steel, laser surface remelting experiments were conducted using a 2kW continuous wave Nd: YAG laser. The grain boundary character distribution (GBCD) and microstructures of the materials were analyzed using EBSD, SEM and OM. The experimental results showed that combination of laser surface melting and annealing on 304 stainless steel resulted in a high frequency of twin boundaries and consequent discontinuity of random boundary network in the materials, which led to an improvement of resistance to intergranular corrosion. The maximum CSL density could reach 88.6% under optimal processing conditions: 1220K and 28h.

本文言語English
ページ(範囲)847-853
ページ数7
ジャーナルJournal of Materials Science
42
3
DOI
出版ステータスPublished - 2007 2

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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