摘要
利用箱式电阻炉、金相显微镜、电化学工作站等设备研究固溶处理温度对2205不锈钢在不同介质中显微组织和耐蚀性的影响。结果表明,随着固溶温度升高,奥氏体含量不断减少,铁素体含量不断增多;在p H值不同的溶液中,双相不锈钢的耐蚀性能有一定差异:酸性溶液中,在1 050℃左右进行固溶处理,此时的双相不锈钢奥氏体与铁素体含量比接近1∶1,耐酸性能较好,而在碱性溶液中,1 100℃固溶处理时的腐蚀速度较小,耐蚀性能较好;1 100℃固溶处理的双相不锈钢在含氯离子的环境中虽无明显钝化区,但腐蚀速率较小,具有一定耐点蚀性能。
The effects of temperatures on the corrosion resistances and microstructures of 2205 stainless steels in different media were studied by box resistance furnace,metallographic microscope,electrochemical workstation and other equipments. The results show that as the solution temperature increases,the austenite content decreases and the ferrite content increases. In solutions of different p H values the corrosion resistances of duplex stainless steels were different. In acidic solution,when the solution treatment was carried out at about 1 050 ℃,the corrosion resistance was the best and the ratio of austenite content to ferrite content was 1∶ 1; in alkaline solution,when the solution treatment was carried out at 1 100 ℃,the corrosion rate was the lowest; in Na Cl solution,when the solution treatment was carried out at 1 100 ℃,no obvious passive area appeared in the 2205 duplex stainless steel,but the corrosion rate was low and the corrosion resistance good.
作者
李艳玲
亢淑梅
郭宏南
肖健
董明
LI Yanling;KANG Shumei;GUO Hongnan;XIAO Jian;DONG Ming(School of Materials and Metallurgy, University of Science and Technology, Anshan 114000, China;Baosteel Zhanjiang Iron ＆ Steel Co., Ltd., Zhanjiang 524000, China)
出处
《材料开发与应用》
CAS
2018年第1期59-63,共5页
Development and Application of Materials
基金
辽宁省大学生创新创业项目资助(201710146000347)
关键词
2205双相不锈钢
固溶处理
温度
耐蚀性
2205 duplex stainless steel
solution treatment
temperature
corrosion resistance
