压力容器用WH590E高强钢焊接热模拟研究  

Thermal Simulation Study on Welding of WH590E High-Strength Steel for Pressure Vessel

作　　者：李清山 夏新华 谢旭梦 潘文杰 黄剑波 许清 张梅[3] LI Qingshan;XIA Xinhua;XIE Xumeng;PAN Wenjie;HUANG Jianbo;XU Qing;ZHANG Mei(Zhejiang Academy of Special Equipment Science,Hangzhou Zhejiang 310009,China;Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province,Hangzhou Zhejiang 310020,China;School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]浙江省特种设备科学研究院,浙江杭州310009 [2]浙江省特种设备安全检测技术研究重点实验室,浙江杭州310020 [3]上海大学材料科学与工程学院,上海200444

出　　处：《上海金属》2024年第6期52-57,64,共7页Shanghai Metals

基　　金：国家重点研发计划(2017YFB0304402)。

摘　　要：采用Gleeble-3500热模拟试验机对厚度为11 mm的WH590E钢板进行单道次焊接热模拟试验,研究了焊接热循环峰值温度及冷却速率对热影响区组织和性能的影响。结果表明:焊接热循环时间(t_(8/5))相同时,WH590E钢的-40℃冲击韧性随峰值温度的升高而逐渐降低,峰值温度为1310℃时冲击韧性较差;峰值温度为800和950℃时,随着t_(8/5)从50 s增加至100 s,钢的低温冲击韧性略微降低。母材冲击断口放射区面积较小,随着峰值温度的升高,放射区面积逐渐增大。峰值温度为1310℃时,断口几乎全部为放射区,呈现脆性断裂特征。峰值温度为1310℃时,粗晶热影响区低温冲击韧性的降低主要与粗大组织和M-A组元有关。A thermal simulation test for single-pass welding of the 11-mm-thick WH590E steel plate was carried out by Gleeble-3500 thermal simulation tester,and the effect of peak temperature and cooling rate in welding thermal cycle on microstructure and properties of the heat affected zone was investigated.The results showed that when the welding thermal cycle time(t_(8/5))was the same,the impact toughness of WH590E steel at-40℃decreased gradually with the increase in peak temperature,and was poor when the peak temperature was 1310℃,and that when the peak temperatures were 800 and 950℃,the low-temperature impact toughness of the steel decreased slightly as the t_(8/5)increased from 50 to 100 s.The area of radiation zone in the impact fracture of the base metal was relatively small,but increased gradually with the increase in the peak temperature.When the peak temperature was 1310℃,the fracture was almost completely radioactive zone,and showing brittle fracture characteristics.When the peak temperature was 1310℃,the decrease in low-temperature impact toughness in the coarse grain heat affected zone was mainly related to the coarse grain and the M-A constituent.

关 键 词：焊接工艺 焊接热影响区 冲击性能 粗晶热影响区 

分 类 号：TG445[金属学及工艺—焊接]