以优化焊接工艺性为出发点,建立Al2O3、TiO2、ZrO2、SiO2为因素的正交试验,并利用光学显微镜、拉伸-冲击材料试验机对X100管线钢焊缝组织与力学性能进行了研究.结果表明,在质量分数为Al2O310%,TiO26%,ZrO27%,SiO2 20%时焊接工艺值最高,焊缝主要显微组织为针状铁素体和粒状贝氏体,熔敷金属最高抗拉强度达781.4MPa,为母材的93.3%,冲击功(-20℃)均大于90J.
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