轨道交通车辆铝合金焊接接头疲劳性能测试标准对比分析

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Comparative Analysis of Fatigue Performance Testing Standards for Aluminum Alloy WeldedJointsin Rail Transit Vehicles

LIWenxia ZHANG XiangjieLI Bing XU Hongwei （CRRCQingdao SifangCo.，Ltd.）

Abstract：Withthe developmentofrail transitvehicles inChina，higherand higher requirements have beenput forward forthe materials used inrail transit vehicles.The fatigue performance of aluminum allywelded joints has an important impact on the service performance of aluminum alloys.It isof great signifcance to study and test the fatigue performance of aluminum aloy welded joints.This article summarizes andanalyzes the relevant standards for thefatigueperformance of aluminum aloy welded joints used inrail transitvehicles，comprehensively determines the standards that need tobe comparedandanalyzed，andomprehensivelycomparesandanalyzes thediferences intermsof thescopeofaplicatioof the standards，sampleselection，sample processing，loadconditions，testing methods，andotheraspects，providingreference for the development of fatigue performance testing plans for aluminum alloy welded joints used inrail transit vehicles. Keywords：rail transit vehicles;aluminumalloy welded joints;fatigue performance testing;standardscomparison

0 引言

度小、比强度高、易于加工成型、具有良好的耐腐蚀性等诸多优点，被广泛应用于城际列车、地铁和高速列车等车体及关键零部件上。（剩余4280字）