低温气体渗碳对形变304L不锈钢抗点蚀性能的影响
Effect of Low Temperature Gaseous Carburization on Pitting Corrosion Resistance of Deformed 304L Stainless Steel
摘 要
通过电化学试验的方法，研究了低温气体渗碳（LTGC）处理对形变304L不锈钢抗点蚀性能的影响。结果表明：经过45%预应变后，304L不锈钢中产生了约62%（体积分数）的α'-马氏体（形变诱导马氏体），在含Br-的溶液中抗点蚀性能大幅降低；经低温气体渗碳处理后，304L不锈钢表面α'-马氏体基本消失，大量碳原子固溶形成了膨胀奥氏体相，提高形变304L不锈钢的抗点蚀性能。
膨胀奥氏体
形变诱导马氏体
点蚀
low temperature gaseous carburization (LTGC)
expanded austenite
martensite induced by deformation
pitting corrosion
Abstract
The effect of low temperature gaseous carburization (LTGC) on pitting corrosion resistance of deformed 304L stainless steel was studied by electrochemical testing. The results show that 62% (volume fraction) α'-martensite (martensite induced by deformation) was found in 304L stainless steel after pre-strain of 45%, and the pitting corrosion resistance in solution containing Br- decreased. After LTGC treatment, the α'-martensite in the surface of 304L stainless steel disappeared and was transformed into expanded austenite by solid solution of a large number of carbon atoms in it, which improved the pitting corrosion resistance of deformed 304L stainless steel.
中图分类号 TG172.9 DOI 10.11973/fsyfh-201902002
所属栏目 试验研究
基金项目 国家自然科学基金资助项目（51475224）；江苏省高校自然科学研究重大项目（14KJA470002）；江苏省普通高校研究生创新计划资助项目（KYZZ16_0234）
收稿日期 2017/9/24
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引用该论文: JIANG Yong,LI Yang,ZHOU Yang,GONG Jianming. Effect of Low Temperature Gaseous Carburization on Pitting Corrosion Resistance of Deformed 304L Stainless Steel[J]. Corrosion & Protection, 2019, 40(2): 87
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参考文献
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【2】梁磊,赵阳,刘世宏,等. 凝汽器材料的耐磨蚀性能及电化学性能[J]. 腐蚀与防护,2015,36(8):717-720.
【3】姜海一,张雅琴,贾国栋,等. 奥氏体不锈钢制容器失效典型案例分析[C]//2006年全国失效分析与安全生产高级研讨会论文集. 北京:中国机械工程学会,2006:70-76.
【4】KOLSTER B H. Mechanism of Fe and Cr transport by liquid sodium in non-isothermal loop systems[J]. Journal of Nuclear Materials,1975,55(2):155-168.
【5】SUN Y,CHIN L Y. Residual stress evolution and relaxation in carbon S phase layers on AISI 316 austenitic stainless steel[J]. Surface Engineering,2002,18(6):443-446.
【6】MICHAL G M,ERNST F,KAHN H,et al. Carbon supersaturation due to paraequilibrium carburization:stainless steels with greatly improved mechanical properties[J]. Acta Materialia,2006,54(6):1597-1606.
【7】AGARWAL N,KAHN H,AVISHAI A,et al. Enhanced fatigue resistance in 316L austenitic stainless steel due to low-temperature paraequilibrium carburization[J]. Acta Materialia,2007,55:5572-5580.
【8】HEUER A H,KAHN H,ERNST F,et al. Enhanced corrosion resistance of interstitially hardened stainless steel:implications of a critical passive layer thickness for breakdown[J]. Acta Materialia,2012,60(2):716-725.
【9】SHARGHI-MOSHTAGHIN R,KAHN H,GE Y D. Low-temperature carburization of the Ni-base superalloy IN718:improvements in surface hardness and crevice corrosion resistance[J]. Metallurgical and Materials Transactions,2010,41(8):2022-2032.
【10】PENG Y,GONG J,JIANG Y,et al. The effect of plastic pre-strain on low-temperature surface carburization of AISI 304 austenitic stainless steel[J]. Surface and Coatings Technology,2016,304:16-22.
【11】陈佳栋,姜勇,周阳,等. 醋酸回收罐进口管泄漏原因[J]. 腐蚀与防护,2017,38(6):483-486.
【12】荣冬松. 316L奥氏体不锈钢低温超饱和气体渗碳表面强化行为研究[D]. 南京:南京工业大学,2016.
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【14】王艳飞,巩建鸣,荣冬松,等. 不锈钢低温气体渗碳的C浓度与扩散应力测量与计算[J]. 金属学报,2014,50(4):409-414.
【15】高峰,巩建鸣,姜勇,等. 316L奥氏体不锈钢低温气体渗碳后的表面特性[J]. 金属热处理,2014,39(12):102-106.
【16】RONG D S,JIANG Y,GONG J M. Residual stress in low temperature carburised layer of austenitic stainless steel[J]. Materials Science and Technology,2017,33(3):277-284.
【17】YU Z,XU X,WANG L,et al. Structural characteristics of low-temperature plasma-nitrided layers on AISI 304 stainless steel with an α'-martensite layer[J]. Surface & Coatings Technology,2002,153(2):125-130.
【18】AMAR DE K,MURDOCK D C,MATAYA M C,et al. Quantitative measurement of deformation-induced martensite in 304 stainless steel by X-ray diffraction[J]. Scripta Materialia,2004,50(12):1445-1449.
【19】胡钢,许淳淳,张新生. 马氏体相变对304不锈钢点蚀发展过程的影响[J]. 腐蚀与防护,2004,25(12):507-509.
【20】王立坤,周杨,魏超,等. 金属软管点蚀分析[J]. 腐蚀与防护,2017,38(3):243-246.
【21】方智,吴荫顺,张琳,等. 形变诱发马氏体对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.
【22】丁宝峰,吴荫顺,ABUBAKIR,等. AISI304奥氏体不锈钢的形变诱发马氏体相变及其电化学行为研究[C]//腐蚀科学与防腐蚀工程技术新进展. 北京:中国腐蚀与防护学会,1999:193-197.
【23】TSUJIKAWA M,YOSHIDA D,YAMAUCHI N,et al. Surface material design of 316 stainless steel by combination of low temperature carburizing and nitriding[J]. Surface & Coatings Technology,2005,200(1):507-511.
【24】MARTIN F J,LEMIEUX E,NEWBAUER T,et al. Localized corrosion resistance of LTCSS-carburized materials to seawater immersion[J]. Ecs Transactions,2007,3(31):613-627.
【25】BUHAGIAR J,SPITERI A,SACCO M,et al. Augmentation of crevice corrosion resistance of medical grade 316LVM stainless steel by plasma carburising[J]. Corrosion Science,2014,59(6):169-178.
【26】FORMOSA D,HUNGER R,SPITERI A,et al. Corrosion behaviour of carbon S-phase created on Ni-free biomedical stainless steel[J]. Surface & Coatings Technology,2012,206(16):3479-3487.
【27】THAIWATTHANA S,LI X Y,DONG H,et al. Runner-up corrosion wear behaviour of low temperature plasma alloyed 316 austenitic stainless steel[J]. Surface Engineering,2003,19(3):211-216.
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