涂层及热处理对不锈钢薄壁管高温爆破性能的影响  

Effect of Coating and Heat Treatment on High Temperature Burst Property of Stainless Steel Thin-walled Tube

作　　者：韩志博[1] 杨洪广[1] 张建通[1] 袁晓明[1] 刘珊珊[1] HAN Zhibo;YANG Hongguang;ZHANG Jiantong;YUAN Xiaoming;LIU Shanshan(Division of Reactor Engineering Technology Research,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院反应堆工程技术研究部,北京102413

出　　处：《原子能科学技术》2020年第11期2182-2187,共6页Atomic Energy Science and Technology

摘　　要：为研究压水堆及超临界水冷堆失水事故工况下堆用不锈钢薄壁管的高温爆破行为及涂层与热处理对高温爆破性能的影响,利用自行研制的高温爆破试验装置,开展了316L不锈钢原始管、热处理管及涂层管在模拟失水事故温度条件下的瞬态加热高温爆破试验,获得了3种不锈钢样品管在600~1200℃、升温速率为5℃/s条件下的高温爆破性能数据及爆破强度和周向延伸率随温度的变化关系,并对破口形貌和微观组织进行了观察分析。结果表明:涂层制备时的热处理温度是高温爆破强度降低的主要影响因素,而涂层本身对高温爆破强度几乎没有影响。In order to investigate the high temperature burst behavior and effect of coating and heat treatment on burst properties of stainless steel thin-walled tube for pressurized water reactor(PWR)and supercritical water-cooled reactor(SCWR)under the simulated LOCA(loss of coolant accident)conditions,the transient-heating burst tests of original,heat treatment and coated tube specimens were carried out under the simulated LOCA conditions by using the high temperature burst facility.The data of high temperature burst properties based on three kinds of 316L stainless steel tubes and the relationships between burst strength and total circumference elongation(TCE)with temperature were obtained under the conditions of 600-1200℃and heating rate of 5℃/s,meanwhile,the fracture morphology and microstructure of burst test specimens were analyzed.The results of the burst test show that heat treatment temperature of coating preparation is the main reason for the decrease in burst strength,and the coating has little effect on the high temperature burst strength.

关 键 词：316L不锈钢 爆破性能 高温爆破 失水事故 

分 类 号：TL341[核科学技术—核技术及应用]