热处理工艺对12Cr13不锈钢耐盐雾腐蚀性能的影响
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摘要
对12Cr13不锈钢进行热处理试验,观察了试样的金相组织、碳化物形貌特征,测试了耐中性盐雾腐蚀性能及点蚀电位。结果表明:12Cr13正火及正火+350℃回火的耐盐雾腐蚀性能最佳,正火+750℃回火的耐盐雾腐蚀性能良好,正火+550℃回火的耐蚀性能显著恶化,对加工零件的最终热处理工艺应避开中温回火以保证其耐腐蚀性能。
The heat treatment test had been conducted on 12 Cr13 stainless steel,and the metallographic structure and carbide morphology of the resulted samples were observed,and the corrosion resistance and pitting potential of the samples were tested.The results show that the salt spray corrosion resistance of both normalized and normalized +350 ℃ tempered 12 Cr13 steel are the best,the salt spray corrosion resistance of normalized +750 ℃ tempered is good,butthe corrosion resistance of normalized +550 ℃ tempered is significantly deteriorated.The final heat treatment process of processed parts should avoid medium temperature tempering to ensure its corrosion resistance.
The heat treatment test had been conducted on 12 Cr13 stainless steel,and the metallographic structure and carbide morphology of the resulted samples were observed,and the corrosion resistance and pitting potential of the samples were tested.The results show that the salt spray corrosion resistance of both normalized and normalized +350 ℃ tempered 12 Cr13 steel are the best,the salt spray corrosion resistance of normalized +750 ℃ tempered is good,butthe corrosion resistance of normalized +550 ℃ tempered is significantly deteriorated.The final heat treatment process of processed parts should avoid medium temperature tempering to ensure its corrosion resistance.
引文
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[6] Xiao Jimei.Metal problems of stainless steel[M].Beijing:Metallurgical Industry Press,2006:133-135.(肖纪美.不锈钢的金属学问题[M].北京:冶金工业出版社,2006:133-135.)
[7] Sang Mok Lee,Wan Gyu Lee,Yeong Ho Kim,et al.Surface roughness and the corrosion resistance of 21Cr ferritic stainless steel[J].Corrosion Science,2012,63:404-409.
[8] Zhang Jiancong,Wang Lili,Huang Jia.Research and application of heat treatment process with 20Cr13 martensitic stainless steel material for chain[J].Journal of Mechanical Transmission,2016,40(11):86-88.(张健聪,王丽丽,黄嘉.链条用马氏体不锈钢20Cr13材料的热处理工艺研究及应用[J].机械传动,2016,40(11):86-88.)
[9] Bai He,Wang Bojian,Shen Zhijun,et al.Effect of heat treatment on microstructure and properties of 2Cr13 martensitic stainless steel containing molybdenum[J].Heat Treatment of Metals,2010,35(3):71-75.(白鹤,王伯健,沈志军,等.热处理对含钼2Cr13马氏体不锈钢组织与性能的影响[J].金属热处理,2010,35(3):71-75.)
[10] Liu Shuangmei,Liu Daoxin,Fan Guofu,et al.Chemical passivation and corrosion resistance of stainless steel[J].Journal of Functional Materials,2001(10):1094-1096.(刘双梅,刘道新,樊国福,等.不锈钢化学钝化及耐蚀性研究[J].功能材料,2001(10):1094-1096.)
[11] Yang Shunzhen,Tang Jianyong,Lv Junyi,et al.Effect of tempering temperature on microstructure and mechanical properties of 1Cr13 stainless steel[ J].Hot Working Technology,2012,41(12):181-186.(杨顺贞,唐建永,吕均益,等.回火温度对1Cr13不锈钢组织与力学性能的影响[J].热加工工艺,2012,41(12):181-186.)