R60702锆合金和Ti6AI4V钛合金电阻点焊的微观组织与力学性能研究

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关键词：焊接；锆合金；钛合金；微观组织

中图分类号：TG44 文献标志码：A 文章编号：1671-5276（2025）05-0027-04

Research on Microstructure and Mechanical Properties of R60702 Zirconium Alloy and Ti6Al4V Alloy Resistance Spot Welding Joints

TANG Shunan1，SUN Jiaqi²，GAOMingyue1，CHENBingbing1，LUO Zhen² （1.CGNPC Uranium Resources Co.，Ltd.，Beijing 10o029，China; 2.School of Materials Science and Engineering，Tianjin University，Tianjin 3Oo35o，China）

Abstract：Inorder to achieve the lightweight of nuclear energy equipment，resistance spot welding of zirconium ally and titaniumaloy was studied，and the welding formation，the microstructureof the nugget andthe mechanical propertyof the joint were analyzed.Theresults indicated that the welding joint appearedasan asymmetric nugget due to the diferencesinthephysical properties of thebase metal，andthe sizeof the nugget zone had positiverelationwith the welding current increasing，the nugget zone diameter reached to 6.6mm when the welding current was 12kA C Zr ，Ti） solid solution was observed in the nugget，andthe crisscrossing micro一martensite was formed in Ti6Al4V side.The tensileresult showed that the peak tensile一shear load first increasedand then decreased with the currnt increasing，the peak tensile-shear load reached the maximum value of 7.75kN when the welding current reached And the fracturecharacteristicschangedfrombritlefracturetoplasticfracture，thefracturefailure modechangedfrominterfacial fracture mode to pull-out fracture mode with the increase of current.

Keyword：welding；zirconium alloy；titanium alloy；microstructure

0 引言

的同时实现轻量化设计。（剩余5640字）