铁素体系耐热钢焊接热影响区相变行为的CSLM原位观察

申洋, 谷征满, 王聪

Phase Transformation Behaviors in the Heat-Affected Zones of Ferritic Heat-Resistant Steels Enabled by In Situ CSLM Observation

SHEN Yang, GU Zhengman, WANG Cong

表1 P11、P22和P91铁素体耐热钢的化学成分

Table 1 Chemical compositions of P11, P22, and P91 ferritic heat-resistant steels (mass fraction / %)

Steel C Mn P S Si Cr Mo V N Nb Ni Fe P11 0.130 0.540 0.0170 0.0030 0.590 1.120 0.572 0.003 0.0049 0.003 0.590 Bal. P22 0.141 0.557 0.0049 0.0015 0.092 2.395 0.967 0.014 0.0049 0.020 0.157 Bal. P91 0.100 0.450 0.0170 0.0050 0.300 8.150 0.950 0.210 0.0440 0.060 0.170 Bal.