冷加工变形对1Cr18Ni9Ti不锈钢在含溴醋酸溶液中耐腐蚀性能的影响
Influence of Cold Working Deformation on Corrosion Resistance of 1Cr18Ni9Ti Stainless Steel in Acetic Acid Containing Br-Ion
摘 要
在室温条件下,通过单轴拉伸试验对1Cr18Ni9Ti不锈钢产生不同程度的塑性变形,利用铁磁法测量得到了塑性变形量与α′-马氏体相含量的关系.在此基础上,采用化学浸泡法和电化学测量技术对产生塑性变形的1Cr18Ni9Ti试样在含溴醋酸环境下的腐蚀行为进行了研究.结果表明：冷加工变形诱发马氏体相变,1Cr18Ni9Ti不锈钢的年腐蚀速率增加,点蚀电位下降,点蚀敏感性增强;但在18％～27％塑性变形量下,1Cr18Ni9Ti不锈钢耐腐蚀性能增强.
点蚀
醋酸
溴离子
冷加工变形
stainless steel
pitting corrosion
acetic acid
Br-ion
cold working deformation
Abstract
Plastic deformation with different levels was carried out by means of uniaxial tension tests at room temperature(25 ℃) for 1Cr18Ni9Ti stainless steel.The relationship between plastic deformation and content of α′-martensite phase was obtained by means of ferrmagnetometor.The corrosion behaviour of 1Cr18Ni9Ti stainless steel with different levels of plastic deformation was studied by means of chemical immersion method and electrochemical method in acetic acid solution containing Br-.The cold working deformation induced martensitic phase transformation,which resulted in increase in corrosion rate and decrease in pitting potential and pitting corrosion sensibility of deformed 1Cr18Ni9Ti stainless steel in acetic acid containing Br- ion.However,the corrosion resistance of 1Cr18Ni9Ti stainless steel with 18%-27% plastic deformation was improved.
中图分类号 TG172.6
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收稿日期 2005/9/1
修改稿日期 2005/11/11
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备注李峰(1979-),男,江苏江阴人,硕士研究生.
引用该论文: LI Feng,GONG Jian-ming,LIANG Bin,JIANG Yong,TU Shan-dong. Influence of Cold Working Deformation on Corrosion Resistance of 1Cr18Ni9Ti Stainless Steel in Acetic Acid Containing Br-Ion[J]. Materials for mechancial engineering, 2006, 30(9): 13～16
李峰,巩建鸣,梁斌,姜勇,涂善东. 冷加工变形对1Cr18Ni9Ti不锈钢在含溴醋酸溶液中耐腐蚀性能的影响[J]. 机械工程材料, 2006, 30(9): 13～16
被引情况:
【1】董伟南,王艳飞,巩建鸣, "塑性预变形对316L奥氏体不锈钢氢脆的影响",机械工程材料 38, 23-27(2014)
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参考文献
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【6】Hannine H E.Influence of metallurgical variable on environment sensitive cracking of austenitic alloys[J].International Metals Reviews,1979,(3):85-136.
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【10】方智,吴荫顺,张琳,等.变形诱发马氏体对304不锈钢在活化状态下电化学行为的影响[J].腐蚀科学与防护技术,1997,9(1):75-78.
【11】徐瑞芬,许淳淳,薛慧勇,等.奥氏体不锈钢中马氏体含量对其钝化膜稳定性的影响[J].材料保护,1998,31(9):7-9.
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