贝氏体-珠光体钢轨焊接接头超声探伤分析  

Analysis of abnormal ultrasonic echo from the bottom of the flash welded joint between bainite rail and pearlitic rail

作　　者：孙立彬[1] 程亮[1] 陈晨[2] Sun Libin;Cheng Liang;Chen Chen(China Railway Baoji Bridge Group Co.,Ltd.,Baoji Shaanxi 721006,China;Yanshan University,Qinhuangdao Hebei 066044,China)

机构地区：[1]中铁宝桥集团有限公司,陕西宝鸡721006 [2]燕山大学,河北秦皇岛066044

出　　处：《山西建筑》2023年第14期132-133,137,共3页Shanxi Architecture

基　　金：国家自然科学基金项目(52201143)。

摘　　要：针对贝氏体钢轨与珠光体钢轨闪光焊接接头超声波探伤中轨底产生异常回波的现象,通过对焊接接头不同部位的微观组织、力学性能、超声波探伤等对比分析,研究了轨底产生异常回波的原因,提出了改进建议。In view of the phenomenon of abnormal echo generated at the rail bottom in the ultrasonic flaw detection of flash welded joints between bainite and pearlite rails,the causes of abnormal echo generated at the rail bottom are studied through comparative analysis of the microstructure,mechanical properties,ultrasonic flaw detection,etc.of different parts of the welded joints,and suggestions for improvement are put forward.

关 键 词：铁路 贝氏体 珠光体 钢轨 焊接 超声探伤 

分 类 号：U213.92[交通运输工程—道路与铁道工程]