张坤,王楠楠,王增强,闫炳辰,邱然锋

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

以100μm厚的铌箔为中间层，改变中间层的层数对钛与Q235低碳钢进行电阻点焊，利用扫描电镜对接头熔核区域的微观组织进行观察，研究了焊接电流和焊接时间对接头熔核直径和抗剪力的影响。结果表明：随着铌中间层层数的增加，可采用的焊接参数范围逐渐增大。但随着铌中间层层数的增加，焊接接头的抗剪力呈先增加后降低的变化趋势，在铌中间层层数为3层时，焊接电流为14 kA时达到最大，为6.29 kN。当中间层未熔断时，熔核区域组织主要由α-Fe和Fe_2Nb相组成；当中间层熔断时，熔核区域组织主要由TiFe、TiFe_2和残余Nb中间层处的FeNb金属间化合物组成。

关键词(KeyWords)： 钛;铌;低碳钢;电阻点焊

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51875177);; 河南省科技攻关项目(222102220067)

作者(Author): 张坤,王楠楠,王增强,闫炳辰,邱然锋

DOI: 10.13289/j.issn.1009-6264.2022-0344

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