热处理工艺对Al0.5CoCrFeNi高熵合金在不同介质下腐蚀行为及力学性能的影响

段敬民, 董勇, 缪东美, 杨玉婧, 毛凌波, 章争荣

Corrosion Behavior in Different Media and Mechanical Properties of Al0.5CoCrFeNi High-entropy Alloy After Heat Treatment

DUAN Jingmin, DONG Yong, MIAO Dongmei, YANG Yujing, MAO Lingbo, ZHANG Zhengrong

表3 铸态和轧制后不同温度热处理态合金在0.5 mol/L H2SO4溶液中极化曲线和阻抗谱拟合参数

Table 3 Fitting electrochemical parameters of polarization curves and EIS of as-cast alloy and as-rolled alloys with heat treatment at different temperatures in 0.5 mol/L H2SO4 solution

Alloys Ecorr / V Icorr / μA·cm-2 Rs / Ω·cm2 CPE1 / 10-5 Ω-1·cm-2·s n n1 R1 / kΩ·cm2 Σ λ2 As-cast -0.79 128.44 4.73 9.40 0.88 323.20 2.97 × 10-4 800 ℃ -0.79 56.55 4.68 9.00 0.89 284.00 1.62 × 10-4 1000 ℃ -0.80 91.10 4.66 9.92 0.88 270.50 1.47 × 10-4 1200 ℃ -0.79 47.68 5.13 9.61 0.87 287.70 1.22 × 10-4