组织配分对双相不锈钢微区极化行为及点蚀抗性的影响

汪毅聪, 胡骞, 黄峰, 刘静

Effect of Microstructure Partition on Micro-polarization Behavior and Pitting Resistance of Duplex Stainless Steel

WANG Yicong, HU Qian, HUANG Feng, LIU Jing

表1 6种试样中两组成相占比及主要合金元素含量

Table 1 Volume fraction and element composition of two phases

Sample Solution temperature / ℃ Phase Volume fraction / % Average mass fraction / % Cr Mo N 1# 1000 α 55.3 23.00 4.30 0.05 γ 44.7 20.13 2.49 0.407 2# 1050 α 57.7 23.11 4.20 0.05 γ 42.3 20.78 2.23 0.431 3# 1100 α 60.8 22.90 3.85 0.05 γ 39.2 20.72 2.33 0.465 4# 1150 α 62.9 22.78 3.73 0.05 γ 37.1 21.35 2.35 0.507 5# 1200 α 64.8 23.51 3.47 0.05 γ 35.2 21.42 2.39 0.518 6# 1250 α 67.5 22.46 3.66 0.05 γ 32.5 20.86 2.36 0.561