两种高速铁路用新型鱼尾板材料的力学性能评价  

Performance Evaluation of Two New Types of Fishplate Materials Used for High-speed Railway

作　　者：闻凯[1] 许富民[1] 谭毅[1] 

机构地区：[1]大连理工大学材料科学与工程学院三束材料改性国家重点实验室,辽宁大连116024

出　　处：《机械工程材料》2008年第2期49-52,56,共5页Materials For Mechanical Engineering

基　　金：江苏省高新技术产业化资助项目(JH01-071)

摘　　要：对国产和德国产两种新型鱼尾板材料在室温和低温下的拉伸性能和冲击性能进行了对比研究;用扫描电镜观察不同温度下拉伸断口和冲击断口的形貌,并讨论了材料的断裂方式。结果表明:两种材料均为低合金钢;室温和低温下的拉伸、冲击性能均高于国内现用的B7钢及日本产鱼尾板材料,在室温和-55℃下,国产材料的屈服强度、伸长率分别为568,700 MPa和22.0%,21.5%,德国产材料屈服强度、伸长率分别为615,675 MPa和24.4%,22.0%;德国产鱼尾板材料力学性能比国产材料稳定。According to the state standard,comparative studies were made on the tensile property and impact property of two types of new fishplate materials made both in China and Germany at room temperature and low temperature.The images of tensile fracture and impact fracture at various temperatures were observed with SEM.The modes of cracking are discussed.The results indicate that the two types of materials are low alloy steels.At room and low temperature,the tensile and impact properties of these two materials ar...

关 键 词：鱼尾板 力学性能 断口分析 

分 类 号：U214[交通运输工程—道路与铁道工程]