O, N和Ni含量对0Cr25Ni7Mo4N双相不锈钢热轧塑性的影响*

陈雨来, 张泰然, 王一德, 李静媛

EFFECTS OF O, N AND Ni CONTENTS ON HOT PLASTICITY OF 0Cr25Ni7Mo4N DUPLEX STAINLESS STEEL

CHEN Yulai, ZHANG Tairan, WANG Yide, LI Jingyuan

表1 实验钢及SAF 2507双相不锈钢的化学成分

Table 1 Chemical compositions of tested steels and SAF 2507 steel

Steel C Cr Ni Mo Mn Si N P S Al O Fe No.1 0.027 25.3 6.72 4.18 0.65 0.66 0.25 0.025 0.0040 0.098 0.0059 Bal. No.2 0.015 24.7 8.33 4.06 0.08 0.16 0.34 0.012 0.0067 0.093 0.038 Bal. No.3 0.012 23.9 6.43 4.38 0.17 0.18 0.29 0.011 0.0076 0.120 0.0465 Bal. SAF 2507 ≤0.03 24.0~ 6.0~ 3.0~ ≤1.2 ≤1.0 0.24~ ≤0.035 - - - Bal. 26.0 8.0 5.0 0.32