軌道交通車輛鋁合金焊接接頭疲勞性能測(cè)試標(biāo)準(zhǔn)對(duì)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、比強(qiáng)度高、易于加工成型、具有良好的耐腐蝕性等諸多優(yōu)點(diǎn)，被廣泛應(yīng)用于城際列車、地鐵和高速列車等車體及關(guān)鍵零部件上。（剩余4280字）