邱然锋,李青哲,赵洋洋,石红信.基于铌中间层的钛与低碳钢的电阻点焊[J].稀有金属材料与工程,2019,48(10):3309~3314.[Qiu Ranfeng,Li Qingzhe,Zhao Yangyang,Shi Hongxin.Resistance Spot Welding between Titanium and Mild Steel with An Insert of Nb[J].Rare Metal Materials and Engineering,2019,48(10):3309~3314.]
基于铌中间层的钛与低碳钢的电阻点焊
投稿时间:2018-04-22  修订日期:2018-06-04
中文关键词:      低碳钢  电阻点焊
基金项目:国家自然科学基金(项目号U1204520);河南省国际合作项目( 项目号182102410066) ; 河南省高校科技创新人才计划基金( 项目号16HASTIT050)
中文摘要:
      以0.1 mm厚的铌箔为中间层对钛与低碳钢Q235进行了点焊,观察了接头熔核区域的显微组织特征,探讨了焊接电流对接头熔核直径和抗剪力的影响。试验结果表明,焊接电流大于8 kA时中间层铌在焊接中发生溶断,接头熔核区域组织主要由Fe-Ti金属间化合物构成;铌不发生溶断时接头熔核区域组织主要由Fe-Nb化合物与固溶体组成。接头抗剪力随焊接电流的增大呈先增大后降低的变化趋势,焊接电流为7 kA时接头抗剪力最大,约为4.7 kN。
Resistance Spot Welding between Titanium and Mild Steel with An Insert of Nb
英文关键词:titanium  niobium  mild steel  resistance spot welding
英文摘要:
      Titanium and mild steel sheets were welded by resistance spot welding with insert of 100 μm thick niobium foil. The interfacial microstructure characteristics were analyzed; the effects of welding on the nugget diameter and tensile shear load of joint were studied. The results reveal that the niobium foil disconnect during spot welding when the welding current is greater than 8 kA, the nugget is mainly composed of Fe-Ti intermetallic compounds in the case; and that the nugget is mainly composed of Fe-Nb compounds and some solid solution when the niobium foil do not disconnect during spot welding. The tensile shear load of joint increased and then decreased with the increase of welding current. A tensile shear load of a maximum of 4.7 kN was obtained at a welding current of 7 kA.
作者单位E-mail
邱然锋 河南科技大学 材料科学与工程学院 qiurf1221@163.com 
李青哲 河南科技大学 材料科学与工程学院  
赵洋洋 河南科技大学 材料科学与工程学院  
石红信 河南科技大学 材料科学与工程学院  
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