摘要
利用扫描电镜、能量色散X射线谱等,对风电机组大型锻件淬火裂纹的原因进行了分析。结果表明,淬火裂纹起始位置位于大型锻件中心孔内壁的凸台位置。淬火裂纹是由中心孔内壁凸台处的附加应力与偏析区域在热处理过程中产生的内应力共同作用导致。
Cause of quenching cracks in a heavy forging of wind turbine system was analyzed by means of scanning electron microscope and energy dispersive X-ray spectrum.The results show that the initial position of the quenching crack is located at the protuberance position on inner wall of central hole of the heavy forging.The quenching crack is caused by the combined action of the additional stress at the protuberance on inner wall and the internal stress generated in the segregation region during heat treatment.
作者
李新生
刘永超
刘珑
徐建
毕京华
刘国强
阎怀英
丁宁
Li Xinsheng;Liu Yongchao;Liu Long;Xu Jian;Bi Jinghua;Liu Guoqiang;Yan Huaiying;Ding Ning(Jinlei Technology Co.,Ltd.,Jinan Shandong 271105,China;Research Center of Failure Analysis and Engineering Safety Assessment,Shandong Analysis and Test Center,Qilu University of Technology(Shandong Academy of Sciences),Jinan Shandong 250014,China;Shandong Institute of Mechanical Design and Research,Qilu University of Technology(Shandong Academy of Sciences),Jinan Shandong 250031,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2023年第3期296-300,共5页
Heat Treatment of Metals
基金
山东省“泰山学者”特聘专家专项
山东省重点研发计划(2017GSF220004)
山东省科学院科研项目(2020QN003,2019GHPY11,KJHZ201805)。
关键词
风电机组
大型锻件
热处理
淬火开裂
偏析
wind turbine system
heavy forging
heat treatment
quenching cracking
segregation
