一种高速铁路用新型鱼尾板材料的性能评价  

Performance Evaluation of a New Type of Fishplate Material Used for the High-speed Railway

作　　者：闻凯[1] 许富民[1] 谭毅[1] 

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

出　　处：《材料工程》2008年第2期31-34,39,共5页Journal of Materials Engineering

摘　　要：对一种新型非调质贝氏体鱼尾板材料在常温和低温下的拉伸性能和冲击性能进行了全面评价。研究结果表明:该材料的显微组织为晶粒细小的粒状贝氏体,常温和低温下材料的拉伸、冲击性能均高于国内现用的B7钢及日本鱼尾板材料,在室温和-55℃下材料的屈服强度分别为722,738MPa,伸长率分别为60.7%和41.7%。观察了不同温度下的拉伸断口和冲击断口形貌,并讨论了材料的断裂方式。This thesis covers the overall evaluation of the tensile and impact properties of a new type of non-quenched-tempered bainite fishplate material at room temperature and low temperature. The research indicates that the microstructure of this type of material is granular bainite of fine crystal, and both of the tensile and impact properties at room temperature and low temperature are superior to that of China 137 steel and the Japanese fishplate materials. In addition, at room temperature and at -55℃ its yield strength is respectively 722MPa and 738MPa, while the elongation is respectively 60.7% and 41.7%. The figures of tensile fractures and impact fractures at varying test temperatures are also observed and shown in the thesis, coupled with the discussion of the crack way of the material.

关 键 词：鱼尾板材料 力学性能 断口分析 

分 类 号：U213.5[交通运输工程—道路与铁道工程] U214