3种成分中碳合金钢的显微组织及在含Cl-环境下的耐腐蚀性能
Microstructure and Corrosion Resistance in Cl- Containing Environment of Three-Composition Medium Carbon Alloy Steel
摘 要
基于40Cr钢成分,设计出3种成分(质量分数/%)分别为0.35C,0.9Mn,3.5Cr,0.6Si,0.3V,0.05Ti (编号N1),0.35C,1.2Mn,2.0Cr,0.8Si,0.4V,0.11Ti (编号N2)以及0.40C,0.6Mn,3.5Cr,0.8Si,0.1V,0.23Ti (编号为N3)的试验钢,研究了试验钢的显微组织以及在质量分数3.5% NaCl溶液中的电化学性能和耐腐蚀性能。结果表明:N3试验钢的晶粒最细小且马氏体板条束最窄,N1试验钢次之,N2试验钢最大;N1试验钢的开路电位最高,自腐蚀电位最高,自腐蚀电流密度最低,最大相位角绝对值最大,容抗弧半径最大;在NaCl溶液中浸泡24 h后,N1和N3试验钢表面发生局部点蚀,N2试验钢发生均匀腐蚀;N1试验钢中铬含量高,晶粒尺寸适中,表面腐蚀产物致密性最高,耐腐蚀性能最好。
显微组织
含Cl-环境
耐腐蚀性能
medium carbon alloy steel
microstructure
Cl- containing environment
corrosion resistance
Abstract
Three test steels with composition (mass fraction/%) of 0.35C,0.9Mn, 3.5Cr, 0.6Si, 0.3V, 0.05Ti (namely N1), 0.35C, 1.2Mn, 2.0Cr, 0.8Si, 0.4V, 0.11Ti (namely N2) and 0.40C,0.6Mn, 3.5Cr, 0.8Si, 0.1V, 0.23Ti (namely N3) were designed based on 40Cr steel composition, and the microstructure, electrochemical properties and corrosion resistance in 3.5wt% NaCl solution of test steels were studied. The results show that N3 test steel had the smallest grain size and the narrowest martensite lath bundle, followed by N1 test steel and N2 test steel. N1 test steel had the highest open circuit potential, the highest free-corrosion potential, the lowest free-corrosion current density, the largest absolute value of the maximum phase angle, and the largest radius of the capacitive arc. After soaking in NaCl solution for 24 h, localized pitting corrosion occurred on the surface of N1 and N3 test steel, while uniform corrosion occurred on N2 test steel. N1 test steel had high chromium content, moderate grain size, the highest surface corrosion product compactness and the best corrosion resistance.
中图分类号 TG174 DOI 10.11973/jxgccl202209003
所属栏目 试验研究
基金项目 钢铁联合研究基金资助项目(U1860203)
收稿日期 2021/6/13
修改稿日期 2022/7/17
网络出版日期
作者单位点击查看
备注王丹(1989-),女,河南周口人,博士研究生
引用该论文: WANG Dan,ZHONG Qingdong,YANG Jian,ZHANG Shujian. Microstructure and Corrosion Resistance in Cl- Containing Environment of Three-Composition Medium Carbon Alloy Steel[J]. Materials for mechancial engineering, 2022, 46(9): 16～23
王丹,钟庆东,杨健,章书剑. 3种成分中碳合金钢的显微组织及在含Cl-环境下的耐腐蚀性能[J]. 机械工程材料, 2022, 46(9): 16～23
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【15】杨海洋,黄桂桥,丁国清,等.合金元素对耐候钢耐蚀性能的影响[J].环境技术,2015,33(2):25-27. YANG H Y,HUANG G Q,DING G Q,et al.Effect of alloying elements on the corrosion resistance of weathering steel[J].Environmental Technology,2015,33(2):25-27.
【16】刘芮,陈小平,王向东,等.合金元素对耐候钢在海洋大气环境下耐蚀性的影响[J].热加工工艺,2014,43(20):19-22. LIU R,CHEN X P,WANG X D,et al.Effect of alloy elements on corrosion resistance of weathering steels in marine atmosphere environment[J].Hot Working Technology,2014,43(20):19-22.
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【22】徐玉林,徐明波,杨水金.XRD在无机合成中物相分析的应用[J].湖北师范学院学报(自然科学版),2013,33(4):40-46. XU Y L,XU M B,YANG S J.Application of X-ray powder diffraction in phase analysis of inorganic synthesis[J].Journal of Hubei Normal University (Natural Science),2013,33(4):40-46.
【23】毕金凤,李祖来,山泉,等.不同碳含量对中碳低合金钢分级等温淬火组织与性能的影响[J].铸造技术,2016,37(9):1845-1848. BI J F,LI Z L,SHAN Q,et al.Influence of carbon content on microstructure and mechanical properties of medium carbon steel during progressive isothermal quenching[J].Foundry Technology,2016,37(9):1845-1848.
【24】HALL E O.The deformation and ageing of mild steel:III discussion of results[J].Proceedings of the Physical Society Section B,1951,64(9):747-753.
【25】DOUTHWAITE R M,PETCH N J.A microhardness study relating to the flow stress of polycrystalline mild steel[J].Acta Metallurgica,1970,18(2):211-216.
【26】曹中秋,刘伟华,薛荣,等.晶粒细化对Cu-40Ni合金在酸性含Cl-介质中耐蚀性能的影响[J].稀有金属,2006,30(6):735-739. CAO Z Q,LIU W H,XUE R,et al.Effect of grain size on corrosion behavior of Cu-40Ni alloys in acidic media containing Cl-[J].Chinese Journal of Rare Metals,2006,30(6):735-739.
【27】DUARTE R G,CASTELA A S,NEVES R,et al.Corrosion behavior of stainless steel rebars embedded in concrete:An electrochemical impedance spectroscopy study[J].Electrochimica Acta,2014,124:218-224.
【28】RIBEIRO D V,ABRANTES J C C.Application of electrochemical impedance spectroscopy (EIS) to monitor the corrosion of reinforced concrete:A new approach[J].Construction and Building Materials,2016,111:98-104.
【29】TIAN Y W,DONG C F,WANG G,et al.The effect of nickel on corrosion behaviour of high-strength low alloy steel rebar in simulated concrete pore solution[J].Construction and Building Materials,2020,246:118462.
【30】LIU M,CHENG X Q,LI X G,et al.Effect of Cr on the passive film formation mechanism of steel rebar in saturated calcium hydroxide solution[J].Applied Surface Science,2016,389:1182-1191.
【31】BIESINGER M C,PAYNE B P,GROSVENOR A P,et al.Resolving surface chemical states in XPS analysis of first row transition metals,oxides and hydroxides:Cr,Mn,Fe,Co and Ni[J].Applied Surface Science,2011,257(7):2717-2730.
【32】CANO H,DÍAZ I,DE LA FUENTE D,et al.Effect of Cu,Cr and Ni alloying elements on mechanical properties and atmospheric corrosion resistance of weathering steels in marine atmospheres of different aggressivities[J].Materials and Corrosion,2018,69(1):8-19.
【33】MA Y T,LI Y,WANG F H.The effect of β-FeOOH on the corrosion behavior of low carbon steel exposed in tropic marine environment[J].Materials Chemistry and Physics,2008,112(3):844-852.
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