长期服役P91钢蒸汽管道接头的显微组织和拉伸变形行为

赵海, 刘恩泽, 熊诗琪, 田成川, 郦晓慧, 王巍麟

Microstructure and Tensile Deformation Behavior of Welded Joints of P91 Steel for Steam Pipeline in Long-term Service

ZHAO Hai, XIONG Shiqi, LIU Enze, TIAN Chengchuan, LI Xiaohui, WANG Weilin

表1 未服役钢管母材和服役钢管接头各区域的化学成分

Table 1 Chemical composition of P91 base metal of non-service steel pipe and each area of steel pipe joint in service (mass fraction,%)

C Si Mn S P Cr Mo V Nb Fe NBM 0.106 0.402 0.298 0.002 0.004 8.512 1.035 0.224 0.091 Bal. BM 0.099 0.392 0.296 0.002 0.005 8.487 1.038 0.229 0.087 Bal. SHAZ 0.103 0.403 0.299 0.003 0.004 8.504 1.042 0.235 0.092 Bal. WZ 0.141 0.223 0.863 0.006 0.007 8.827 1.024 - 0.053 Bal. BHAZ 0.101 0.385 0.304 0.002 0.004 8.497 1.039 0.231 0.085 Bal.