宋峰雨,刘思远,张元祥

• 1:龙岩学院物理与机电工程学院
• 2:海程新材料科技有限公司
• 3:东北大学轧制技术及连轧自动化国家重点实验室

摘要(Abstract)：

采用实验室气体保护焊焊接制备了3种不同成分的780 MPa级高强度焊缝金属,分析了Ti、B对780 MPa级焊缝金属组织相变的影响。结果表明:在Si、Mn系焊缝金属中,板条贝氏体组织在奥氏体晶界形核并平行排列;当焊缝金属中添加Ti元素后,夹杂物变为由Mn、Si、Ti的氧化物组成,并成为板条贝氏体组织形核的起点,板条贝氏体组织彼此交叉排列;在此基础上继续添加B元素,夹杂物中Ti氧化物所占比重有所增加,板条贝氏体组织再次回归到平行排列的状态。

关键词(KeyWords)： 焊缝金属;板条贝氏体;夹杂物

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51801022);; 龙岩学院青年博士科研启动基金资助项目(No.LB201810)

作者(Author): 宋峰雨,刘思远,张元祥

DOI: 10.13289/j.issn.1009-6264.2020-0216

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