利用小冲杆试验技术评估P92钢拉伸性能  

Evaluation of Tensile Properties of P92 Steel by Means of Small Punch Test

作　　者：侍克献 杨昌顺 邵新中 王苗苗 田根起 王延峰 Shi Kexian;Yang Changshun;Shao Xinzhong;Wang Miaomiao;Tian Genqi;Wang Yanfeng(Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China;Jiangsu Yinhuan Precision Steel Tube Co.,Ltd.,Wuxi 214207,Jiangsu Province,China)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240 [2]江苏银环精密钢管有限公司,江苏无锡214207

出　　处：《发电设备》2022年第1期47-52,共6页Power Equipment

基　　金：上海发电设备成套设计研究院有限责任公司科技发展基金(201808102J)。

摘　　要：采用基于微损取样的小冲杆试验技术对国产主蒸汽管道材料P92钢的拉伸性能开展试验研究。结果表明:试验设备和方法具有良好的可重复性;试验加载速率为0.2 mm/min和0.5 mm/min的结果接近,而与2 mm/min的结果差异比较大。采用室温下的屈服强度关联公式可以对25~650℃的屈服强度进行较好的估算,在试样厚度确定的情况下,采用适当的拟合关系式可以有效降低估算误差。The tensile properties of P92 steel,a domestic main steam pipe material,were investigated by means of small punch test technology based on micro loss sampling.The results show that the test machine and method have good repeatability.The results of loading rates of 0.2 mm/min and 0.5 mm/min are close,while the results of 2 mm/min are quite different.The yield strength at 25-650℃can be well estimated by using the yield strength correlation formula at room temperature.When the sample thickness is determined,the estimation error can be effectively reduced by the appropriate fitting formula.

关 键 词：P92钢 主蒸汽管道 小冲杆试验 拉伸性能 

分 类 号：TG115[金属学及工艺—物理冶金]