河南科技大学学报（自然科学版）2025，Vol.46Issue(6)：27-37,11.DOI:10.15926/j.cnki.issn1672-6871.2025.06.004
基于Nb/白铜复合中间层的钛/钢电阻点焊
Resistance Spot Welding of Ti/steel with Nb/Cupronickel Composite Interlayer
摘要
Abstract
To mitigate the formation of brittle Ti-Fe intermetallic compounds,resistance spot welding of 2 mm thick titanium and 1 mm thick Q235 low-carbon steel was conducted using a 0.1 mm thick composite interlayer consisting of niobium and C7701 white copper foil.The effects of welding current and welding time on nugget diameter and mechanical properties of the joints were investigated,along with microstructural analysis.Results indicated that when nuggets were separated on both sides,a layer comprising FeNb intermetallic compounds and(Nb)solid solution formed between the steel-side nugget and the residual Nb layer.In contrast,a single mixed nugget consisting of TiFe and α-Ti was observed when the joint nugget was unified.With increasing welding current and duration,the nugget diameter expanded,while the shear load first increased and then decreased.The maximum shear load,approximately 7.995 kN,was obtained at 7 kA and 300 ms.关键词
钛/低碳钢/复合中间层/微观组织/电阻点焊Key words
Ti/low-carbon steel/composite intermediate layer/microstructure,resistance spot welding分类
矿业与冶金引用本文复制引用
戚昊,王楠楠,赵培峰,石红信,里中忍..基于Nb/白铜复合中间层的钛/钢电阻点焊[J].河南科技大学学报（自然科学版）,2025,46(6):27-37,11.基金项目
国家自然科学基金项目(51875177) （51875177）
河南省国际科技合作项目(252102521088) （252102521088）
