南京工业大学学报（自然科学版）2024，Vol.46Issue(3)：300-309,10.DOI:10.3969/j.issn.1671-7627.2024.03.007
热效应所致析出相对2205双相不锈钢耐蚀性的影响
The effect of precipitated phases causded by thermal effect on the corrosion resistance of 2205 duplex stainless steel
夏荣华 1唐建群 1巩建鸣1
作者信息
- 1. 南京工业大学机械与动力工程学院江苏省极端承压装备设计与制造重点实验室,江苏 南京 211800
- 折叠
摘要
Abstract
The research studied the types and characteristics of precipitated phases of 2205 duplex stainless steel under different thermal effects.The effect of these phases on the steel's corrosion resistance was tested by analyzing the potentiodynamic polarization curve,electrochemical impedance spectroscopy,and surface morphology after potentiodynamic scanning of the steel specimen in both solid-solution state and under different thermal effects.The results showed that the solid-solution material exhibited the best corrosion resistance and repassivation performance.The corrosion resistance of the material was most severely reduced due to the highest content of X and σ precipitates after aging at 850 ℃,and it changed from pitting to selective corrosion under over potential.After aging at 900 ℃,the decline of corrosion resistance of the steel was alleviated as a result of the reduced precipitated phase content.关键词
2205双相不锈钢/析出相/极化曲线/电化学阻抗谱/耐蚀性Key words
2205 duplex stainless steel/precipitated phase/polarization curve/electrochemical impedance spectroscopy/corrosion resistance分类
矿业与冶金引用本文复制引用
夏荣华,唐建群,巩建鸣..热效应所致析出相对2205双相不锈钢耐蚀性的影响[J].南京工业大学学报（自然科学版）,2024,46(3):300-309,10.
