针对不同预热条件下X80M钢管道全自动焊接接头,开展了裂纹尖端张开位移(crack tip opening displacement,CTOD)的差异性研究.采用单边缺口3点弯曲试样进行CTOD试验,按照GB/T21143-2014标准和ISO15653-2018标准推荐的公式分别进行CTOD值...
This work was supported by the National Natural Science Foundation of China(Grant Nos.11922202,12002050,and 12102044);the National Key Laboratory Foundation of Science and Technology on Materials under Shock and Impact(Grant No.6142902200401);Beijing Institute of Technology Research Fund Program for Young Scholars and the Fundamental Research Funds for the Central Universities(Grant No.2022JCCXLJ01).