低炭素鋼レーザ溶接金属の組織微細化による高靭性化 Improvement in Laser Weld Metal Toughness of Low C steel by Refining Microstructure

この論文にアクセスする

この論文をさがす

著者

抄録

This paper deals with the improvement of weld metal toughness by formation of fully acicular ferrite microstructure in laser welding. The addition of 5-20% oxygen into the He shielding gas for laser welding of Ti added base plate formed Ti containing oxide inclusions in weld metal, which acted as the efficient nucleation sites of acicular ferrite. Although coarse grain boundary ferrite was formed along prior austenite grain boundaries, B addition effectively suppressed the formation of grain boundary ferrite. It was shown that the microstructure of laser weld metal was consisted of fully acicular ferrite when Al/O ratio was less than 1.13 and B content was more than 1/2.22(O-0.89Al-0.33Ti). The laser weld metal of fully acicular ferrite exhibited excellent toughness (vTrs<-100°C).

収録刊行物

  • 溶接学会論文集 : quarterly journal of the Japan Welding Society

    溶接学会論文集 : quarterly journal of the Japan Welding Society 27(1), 55-60, 2010-01-20

    一般社団法人 溶接学会

参考文献:  9件中 1-9件 を表示

各種コード

  • NII論文ID(NAID)
    10030148595
  • NII書誌ID(NCID)
    AN1005067X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02884771
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ