轻轨低地板列车车体弯轴端面开裂原因分析  

Faiure Analysis of C Garde Steel Bending Shaft

作　　者：王丹丹 周胜鹏 谷志刚[3] 隋燕 丛连蔚 WANG Dan-dan;ZHOU Sheng-peng;GU Zhi-gang;SUI Yan;CONG Lian-wei(Jinzhou Jie Tong Railway Machinery Co.,Ltd,Jinzhou 121001,China;Liaoning Branch of Sichuan feizong Electric Power Design Co.,Ltd,Shenyang 110000,China;Materials Science and Engineering,Liaoning University of Technology,Jinzhou 121001,China)

机构地区：[1]锦州捷通铁路机械股份有限公司,辽宁锦州121001 [2]四川飞纵电力设计有限公司辽宁分公司,辽宁沈阳110000 [3]辽宁工业大学材料科学与工程学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2021年第5期334-336,341,共4页Journal of Liaoning University of Technology(Natural Science Edition)

摘　　要：C级钢弯轴在常规列车检修过程中发现裂纹,通过利用宏观检查、化学成分分析、电镜与能谱检验、金相组织分析等方法,分析弯轴失效原因。测试后结果表明,弯轴两端面的裂纹属于铸造热裂纹是钢液在铸造凝固收缩中产生的。Cracks were found in the C Garde Steel Bending Shaft during the routine train maintenance,the failure analysis for Bending Shaft was carried out by the Macro check,Chemical Composition Analysis,Scanning electron microscopy and energy spectrum,Metallographic structure analysis.The test results show that the bent Shaft of casting crack at both ends are casting hot crackin,They were produced during solidification shrinkage in liquid steel.

关 键 词：C级钢 弯轴 铸造热裂纹 失效分析 凝固收缩 

分 类 号：TG115[金属学及工艺—物理冶金]