Effect of Zr-Ti combined deoxidation on impact toughness of coarse-grained heat-affected zone with high heat input welding
  • 万方数据
    中国焊接 중국한접
    CHINA WELDING
    2014年 4期 56-62 ,共7页

    万响亮%吴开明%王红鸿%卢伟煜%成林

    만향량%오개명%왕홍홍%로위욱%성림



    steels%heat-affected zone%high heat input welding%toughness%deoxidation


    In this study,the effects ofZr-Ti combined deoxidation and Al deoxidation on the impact toughness ofcoarse-grained heat-affected zone in high-strength low-alloy steels were investigated.More fine oxides were formed in the Zr-Ti-killed steel than in Al-killed steel.It was also found that more acicular ferrite grains were formed in the coarse-grained heat-affected zone in the Zr-Ti-killed steel than in Al-killed steel.The impact toughness ofcoarse-grained heat-affected zone ofZr-Ti-killed steel was higher than that ofAl-killed steel.The good impact toughness was attributable to the pinning effect offine oxides and the formation ofacicular ferrite grains on fine oxides.
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