TWIP钢在NaCl溶液中的腐蚀行为
Corrosion Behaviors of TWIP Steels in NaCl Solution
摘 要
采用浸泡试验和电化学测试技术测试了不同奥氏体含量的Fe-24Mn-0.45C-0.23Si孪晶诱发塑性钢(TWIP)在3.5% NaCl溶液中的耐腐蚀能力, 观察浸泡不同时间的表面腐蚀形貌, 并分析其腐蚀机制。结果表明, TWIP钢在3.5% NaCl溶液中耐腐蚀性较差, 第二相马氏体的出现会明显损害其耐腐蚀能力。TWIP钢的腐蚀行为可分为三个阶段: 点蚀主导期、点蚀-全面(均匀)腐蚀过渡期和全面(均匀)腐蚀主导期。
电化学
腐蚀形貌
腐蚀机制
TWIP steel
electrochemistry
corrosion morphology
corrosion mechanism
Abstract
The corrosion behaviors of (TWIP steel) Fe-24Mn-0.45C-0.23Si with different austenite contents in 3.5% NaCl solution were studied by electrochemical technique and immersion testing. The morphology of the tested steels was observed after different immersion durations, and the mechanism of corrosion was analyzed. The results showed that the TWIP steel had low corrosion resistance and the whole corrosion process of the TWIP steel could be divided into three stages: pitting corrosion-dominated stage, pitting and general corrosion stage and general corrosion-dominated stage.
中图分类号 TG172.6
所属栏目 试验研究
基金项目 浙江省教育厅资助项目(Y200702634)
收稿日期 2010/7/20
修改稿日期 2010/9/15
网络出版日期
作者单位点击查看
备注刘向海, 硕士研究生,
引用该论文: LIU Xiang-hai,LIU Wei,LIU Jia-bin,SHU Kang-ying. Corrosion Behaviors of TWIP Steels in NaCl Solution[J]. Corrosion & Protection, 2011, 32(5): 355
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参考文献
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【2】Scott C, Allain S, Faral M, et al. The development of a new Fe-Mn-C Austenitic steel for automotive applications[J]. Revue de Metall, 2006(6):293-298.
【3】李大赵, 卫英慧, 侯利锋, 等. 冷轧压下量对TWIP钢组织与性能的影响[J]. 金属热处理, 2010, 35:63-68.
【4】Hutchinson B, Ridley N. On dislocation accumulation and work hardening in Hadfield steel[J]. Scripta Mater, 2006, 55:299-304.
【5】刘向海, 刘薇, 刘嘉斌, 等. 孪生诱发塑性(TWIP)钢的研究现状[J]. 材料导报, 2010(6): 102-105.
【6】黄健中. 汽车腐蚀与防护技术[M]. 北京: 化学工业出版社, 2004: 78-95.
【7】Bobby Kannan M, Singh Raman R K, Khoddam S. Comparative studies on the corrosion properties of a Fe-Mn-Al-Si steel and an interstitial-free steel[J]. Corrosion Science, 2008: 2879-2884.
【8】刘向海, 刘薇, 刘嘉斌, 等. 退火工艺对低铝低硅孪晶诱发塑性钢组织及性能的影响[J]. 中国计量学院学报, 2010, 21: 82-86.
【9】Zhang Y S, Zhu X M, Zhong S H. Effect of alloying elements on the electrochemical polarization behavior and passive film of Fe-Mn base alloys in various aqueous solutions[J]. Corrosion Science, 2004, 46:853-876.
【10】杨仲年, 张昭, 苏景新, 等. 耐候钢在2.0% NaCl中性溶液中的腐蚀过程[J] 金属学报, 2005, 41: 860-864.
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