文献类型：期刊文献

中文题名：小冲杆试验测试回火脆化对加氢反应器用钢焊缝力学性能的影响

英文题名：Effects of Temper Embrittlement on Mechanical Properties of Hydrogenation Reactor Steel Weld Determined by Small Punch Test

作者：张恩勇[1];喻灿[1];徐一飞[1];关凯书[1]

机构：[1]华东理工大学承压系统与安全教育部重点实验室,上海200237

年份：2014

卷号：38

期号：11

起止页码：16

中文期刊名：机械工程材料

外文期刊名：Materials For Mechanical Engineering

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家自然科学基金计划项目(51075148);国家"863"高技术研究资助项目(2012AA040105);国家科技攻关项目(2011BAK06B03)

语种：中文

中文关键词：2.25Cr-1Mo钢焊缝;小冲杆试验;回火脆化;力学性能

外文关键词：2.25Cr-1Mo steel weld;small punch test;temper embrittlement;mechanical property

摘要：利用小冲杆试验（SPT）研究了回火脆化对加氢反应器用2.25Cr-1Mo钢焊缝在-196~22℃范围内力学性能的影响,获得了它的韧脆转变温度,并对SPT试样断口进行了分析。结果表明：随着试验温度的降低,2.25Cr-1Mo钢焊缝的强度明显提高;回火脆化后的屈服强度和抗拉强度较脱脆处理后的明显大,表现出一定的回火强化效应;SPT试样断裂能可以较好地表征材料的低温韧脆转变特性和回火脆化,回火脆化使得材料的韧脆转变温度升高。
The effects of temper embrittlement on mechanical properties of the 2.25Cr-1Mo steel weld in hydrogenation reactor in the temperature range from-196 ℃ to 22 ℃ were studied by small punch test（SPT）.The ductile-brittle transition temperature was obtained and the fractures of SPT specimens were analyzed.The results indicate that the tensile strength of the weld increased with temperature decreasing.The yield strength and tensile strength of specimens after temper embrittlement were significantly greater compared with the specimens after de-brittleness,which showed temper hardening effect.The fracture energy of SPT specimens can be used to characterize the low ductile-brittle transition and temper embrittlement.The ductile-brittle transition temperature of material increased because of temper embrittlement.