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《Physical Testing and Chemical Analysis Part A Physical Testing》 2003-09
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CHENG Nian-yun (Wuhan Jiang′an Rolling Stock Works, Wuhan 430012, China)  
Failed locomotive coupler was analyzed by means of fractographic inspection,chemical analysis, mechanical performance testing,inclusion and metallographic examination. The results show that there were casting-crack in coupler before anneal technology and caused serious oxidize decarbonization. All of this factors led to coupler fatigue fracture.
【CateGory Index】: U260.34
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