EVALUATION OF INTERGRANULAR CORROSION SUSCEPTIBILITY OF 11Cr FERRITIC STAINLESS STEEL BY DL-EPR METHOD

doi:10.11900/0412.1961.2015.00117

Acta Metall Sin

2015, Vol. 51

Issue (11): 1349-1355 DOI: 10.11900/0412.1961.2015.00117

Current Issue | Archive | Adv Search

EVALUATION OF INTERGRANULAR CORROSION SUSCEPTIBILITY OF 11Cr FERRITIC STAINLESS STEEL BY DL-EPR METHOD

Shaoming QIANG¹,Laizhu JIANG²,Jin LI¹,Tianwei LIU³,Yanping WU³,Yiming JIANG¹(

)

1 Department of Materials Science, Fudan University, Shanghai 200433
2 Research and Development Center, Baosteel Co. Ltd., Shanghai 201900
3 National Key Laboratory for Surface Physics and Chemistry Laboratory, Chinese Academy of Engineering Physics, Mianyang 621907

Cite this article:

Shaoming QIANG,Laizhu JIANG,Jin LI,Tianwei LIU,Yanping WU,Yiming JIANG. EVALUATION OF INTERGRANULAR CORROSION SUSCEPTIBILITY OF 11Cr FERRITIC STAINLESS STEEL BY DL-EPR METHOD. Acta Metall Sin, 2015, 51(11): 1349-1355.

Download:

HTML

PDF(1116KB)
Export: BibTeX | EndNote (RIS)

Abstract

Ferritic stainless steel (FSS) containg (11%~13%)Cr with low C and N has excellent comprehensive performances and thus can be widely applied in extensive fields such as automobile exhaust systems, containers, buses and so on. Among them, 409L steel containing 11%Cr has been increasingly used in applications for tail pipes in the cold end parts of automobile exhaust systems because of its good corrosion resistance and moderate price. During the manufacture process for these tail pipes, improper heat treatments and welding operations cause the precipitation of some detrimental phases such as carbides, nitrides, which leads to a reduction on the resistance to intergranular corrosion (IGC) due to the presence of Cr-depleted zone in the grain boundaries. In this work, the precipitates in grain boundaries of 409L steel aged at 600 ℃ were investigated using TEM, EDS and SAED. The double loop-electrochemical potentiokinetic reactivation (DL-EPR) method was extended for evaluating the IGC susceptibility of 409L steel. The operating conditions of the DL-EPR test for 409L steel were optimized by investigating the influences of the main test parameters, such as scanning rate, solution composition, solution temperature. The experimental results showed that the IGC occurred in aged 409L steel due to the precipitation of M₂₃C₆along grain boundaries. The optimized DL-EPR test could evaluate the IGC susceptibility of 409L steel quantitatively with high reproducibility. With the increase of aging time, much more M₂₃C₆ precipitated along grain boundaries, which resulted in 409L steel more susceptible to IGC.

Key words: 11Cr ferritic stainless steel double loop-electrochemical potentiokinetic reactivation intergranular corrosion M₂₃C₆

Fund: Supported by National Natural Science Foundation of China (Nos.51131008 and 51134010), National Key Technology Support Program (No.2012BAE04B00) and Doctoral Fund of Ministry of Education of China (No.20120071110013)

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Shaoming QIANG
	Laizhu JIANG
	Jin LI
	Tianwei LIU
	Yanping WU
	Yiming JIANG

URL:

https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00117 OR https://www.ams.org.cn/EN/Y2015/V51/I11/1349

Fig.1 Volume fraction of phases in 409L steel calculated by Thermo-Calc

Fig.2 TEM image of grain boundary in as-received 409L steel (a), bright-field (b) and dark-field (c) images of grain boundaries in 409L steel after aged at 600 ℃ for 4 h, EDS analysis (d) and SAED pattern (e) of carbides

Fig.3 Effects of KSCN concentration (c) on DL-EPR test for 409L steel in 0.5%H₂SO₄ solution with scanning rate 1.667 mV/s at 30 ℃ (R_a—intergranular corrosion sensitivity)

Fig.4 Effects of scanning rate on DL-EPR test for 409L steel in 0.5%H₂SO₄+0.002%KSCN solution at 30 ℃

Fig.5 Effects of solution temperatures on DL-EPR test for 409L steel in 0.5%H₂SO₄+0.002%KSCN solution with scanning rate 1.667 mV/s

Fig.6 DL-EPR curves at the optimal conditions for 409L steel aged at 600 ℃for different times (E_SCE—potential)

Table 1 DL-EPR results for 409L steel aged at 600 ℃ for different times at the optimal conditions

Fig.7 OM images of 409L steel after DL-EPR test at the optimal conditions

(a) as-received (b) aged at 600 ℃ for 0.5 h (c) aged at 600 ℃ for 4 h (d) aged at 600 ℃ for 10 h

[1]	Pardo A, Merion M C, Coy A E, Viejo F, Carboneras M, Arrabal R. Acta Mater, 2007; 55: 2239
[2]	Nichol T J, Davis J A. Intergranular Corros Stainless Alloy, 1978; 656: 179
[3]	Devine T M, Drummond B J. Corrosion, 1982; 38: 327
[4]	You X M, Jiang Z H, Li H B, Shen M H, Cao Y. Chin Metall, 2007; (11): 16 (游香米, 姜周华, 李花兵, 申明辉, 曹阳. 中国冶金, 2007; (11): 16)
[5]	Gate J D, Jago R A. Mater Sci Technol, 1987; 3: 450
[6]	Fritz J D, Franson I A. Mater Perform, 1997; 36(8): 57
[7]	Lakshminarayanan A K, Balasubramanian V. Mater Des, 2010; 31: 4592
[8]	Kim J K, Lee B J, Lee B H, Kim Y H, Kim K Y. Scr Mater, 2009; 61: 1133
[9]	Kim J K, Kim Y H, Lee J S, Kim K Y. Corros Sci, 2010; 52: 1847
[10]	Warren D. Corrosion, 1959; 15(4): 63
[11]	Guarnieri G J, Miller J, Vawter F J. Trans ASM, 1950; 42: 981
[12]	Pohl M, Storz O, Glogowski T. Mater Charact, 2007; 58: 65
[13]	Tseng C C, Shen Y, Thompson S W, Mataya M C, Krauss G. Metall Mater Trans, 1994; 25A: 1147
[14]	Xiao J M. Metallography Issues of Stainless Steels. 2nd Ed., Beijing: Metallurgy Industry Press, 2006: 39; 166; 171 (肖纪美. 不锈钢的金属学问题. 第二版, 北京: 冶金工业出版社, 2006: 39; 166; 171)
[15]	Gui L F,Wu M D,Zhao Y. Handbook of Materials Testing for Mechanical Engineering. Shenyang: Liaoning Science and Technology Press, 2002: 158 (桂立丰,吴民达,赵源. 机械工程材料测试手册. 沈阳: 辽宁科学技术出版社, 2002: 158)
[16]	Huey W R. Trans Am Soc Steel Treat, 1930; 18: 1126
[17]	Streicher M A. Corros Sci, 1969; 9: 53
[18]	Frangini S, Mignone A. Corrosion, 1992; 48: 75
[19]	Gong J, Jiang Y M, Deng B, Xu J L, Hu J P, Li J. Electrochim Acta, 2010; 55: 5077
[20]	Deng B, Jiang Y M, Xu J L, Sun T, Gao J, Zhang L H, Zhang W, Li J. Corros Sci, 2010; 52: 969
[21]	Gao J, Jiang Y M, Deng B, Zhang W, Zhong C, Li J. Corros Sci, 2009; 54: 5830
[22]	Zhong C, Liu F, Wu Y T, Le J J, Liu L, He M F, Zhu J C, Hu W B. J Alloys Compd, 2012; 520: 11
[23]	Le J J, Liu L, Liu F, Deng Y D, Zhong C, Hu W B. J Alloys Compd, 2014; 610: 173
[24]	Zhong C, He M F, Liu L, Wu Y T, Chen Y J, Deng Y D, Shen B, Hu W B. J Alloys Compd, 2010; 504: 377
[25]	Zhong C, He M F, Liu L, Chen Y J, Shen B, Wu Y T, Deng Y D, Hu W B. Surf Coat Technol, 2010; 205: 2412
[26]	Jin W S, Lang Y P, Rong F, Sun L J. J Chin Soc Corros Prot, 2007; 27: 54 (金维松, 郎宇平, 荣凡, 孙力军. 中国腐蚀与防护学报, 2007; 27: 54)
[27]	Chen F C, Hu S L. Comput Appl Chem, 2001; 18: 433 (陈范才, 胡石林. 计算机与应用化学, 2001; 18: 433)
[28]	Clarke W L, Cowan R L, Wakler W L. Intergranular Corros Stainless Alloy, 1978; 656: 99
[29]	Cihal V. Corros Sci, 1980; 20: 737
[30]	Mignone A, Borello A, Barbera A L. Corrosion, 1982; 38: 390
[31]	Lee J B. Corrosion, 1986; 42: 106
[32]	Li S S. Corros Sci Technol Prot, 2000; 12: 288 (李神速. 腐蚀科学与防护技术, 2000; 12: 288)
[33]	Kim J K, Kim Y H, Uhm S H, Lee J S, Kim K Y. Corros Sci, 2009; 51: 2716
[34]	Amadou T, Braham C, Sidhom H. Metall Mater Trans, 2004; 35A: 3513

[1]	WANG Zongpu, WANG Weiguo, Rohrer Gregory S, CHEN Song, HONG Lihua, LIN Yan, FENG Xiaozheng, REN Shuai, ZHOU Bangxin. {111}/{111} Near Singular Boundaries in an Al-Zn-Mg-Cu Alloy Recrystallized After Rolling at Different Temperatures[J]. 金属学报, 2023, 59(7): 947-960.
[2]	ZHENG Chun, LIU Jiabin, JIANG Laizhu, YANG Cheng, JIANG Meixue. Effect of Tensile Deformation on Microstructure and Corrosion Resistance of High Nitrogen Austenitic Stainless Steels[J]. 金属学报, 2022, 58(2): 193-205.
[3]	Chao CAI,Yang LI,Jinfeng LI,Zhao ZHANG,Jianqing ZHANG. Correlation Between Ageing Precipitation, Potential and Intergranular Corrosion of 2A97 Al-Li Alloy Sheet[J]. 金属学报, 2019, 55(8): 958-966.
[4]	Shenghu CHEN, Lijian RONG. Microstructure Evolution During Solution Treatment and Its Effects on the Properties of Ni-Fe-Cr Alloy[J]. 金属学报, 2018, 54(3): 385-392.
[5]	Xiaosong ZHANG,Yong XU,Shihong ZHANG,Ming CHENG,Yonghao ZHAO,Qiaosheng TANG,Yuexia DING. Research on the Collaborative Effect of Plastic Deformation and Solution Treatment in the Intergranular Corrosion Property of Austenite Stainless Steel[J]. 金属学报, 2017, 53(3): 335-344.
[6]	Xianfeng ZHANG,Guoai LI,Zheng LU,Juan YU,Min HAO. EFFECT OF PREAGED STRETCH AFTER QUENCHED ON THE PROPERTIES AND MICROSTRUCTURE OF A NATURALLY AGED Al-Li ALLOY[J]. 金属学报, 2016, 52(12): 1497-1502.
[7]	YANG Hui, XIA Shuang, ZHANG Zilong, ZHAO Qing, LIU Tingguang, ZHOU Bangxin, BAI Qin. IMPROVING THE INTERGRANULAR CORROSION RESISTANCE OF THE WELD HEAT-AFFECTED ZONE BY GRAIN BOUNDARY ENGINEERING IN 304 AUSTENITIC STAINLESS STEEL[J]. 金属学报, 2015, 51(3): 333-340.
[8]	MO Wenlin, ZHANG Xu, LU Shanping, LI Dianzhong, LI Yiyi. EFFECT OF Nb CONTENT ON MICROSTRUCTURE, WELDING DEFECTS AND MECHANICAL PROPERTIES OF NiCrFe-7 WELD METAL[J]. 金属学报, 2015, 51(2): 230-238.
[9]	Zhifang PENG,Wen REN,Chao YANG,Fangyu CHEN,Hongguo LIU,Fangfang PENG,Qingsong MEI. RELATIONSHIP BETWEEN THE EVOLUTION OF PHASE PARAMETERS OF GRAIN BOUNDARY M₂₃C₆ AND EMBRITTLEMENT OF HR3C SUPER-HEATER TUBES IN SERVICE[J]. 金属学报, 2015, 51(11): 1325-1332.
[10]	LI Hai, MAO Qingzhong, WANG Zhixiu, MIAO Fenfen, FANG Bijun, SONG Renguo, ZHENG Ziqiao. EFFECT OF HIGH TEMPERATURE PRE-AGEING AND LOW-TEMPERATURE RE-AGEING ON MECHANICAL PROPERTIES AND INTERGRANULAR CORROSION SUSCEPTIBILITY OF Al-Mg-Si-Cu ALLOYS[J]. 金属学报, 2014, 50(11): 1357-1366.
[11]	LI Xiangliang, CHEN Jianghua, LIU Chunhui, FENG Jiani, WANG Shihao. EFFECTS OF T6 AND T78 TEMPERS ON THE MICROSTRUCTURES AND PROPERTIES OF Al－Mg－Si－Cu ALLOYS[J]. 金属学报, 2013, 49(2): 243-250.
[12]	GUO Lifang LI Xuyan SUN Tao XU Juliang LI Jin JIANG Yiming . THE INFLUENCE OF SENSITIVE TEMPERATURE ON THE LOCALIZED CORROSION RESISTANCE OF DUPLEX STAINLESS STEEL SAF2304[J]. 金属学报, 2012, 48(12): 1503-1509.
[13]	LI Hai PAN Daozhao WANG Zhixiu ZHENG Ziqiao. INFLUENCE OF T6I6 TEMPER ON TENSILE AND INTERGRANULAR CORROSION PROPERTIES OF 6061 ALUMINUM ALLOY[J]. 金属学报, 2010, 46(4): 494-499.
[14]	XIE Jianhui;WU Yinshun; ZHU Rizhang (Universily of Science and Technology Beijing;Beijing 100083). INTERGRANULAR CORROSION BEHAVIOUR OF IMPLANT STAINLESS STEEL DURING CORROSION FATIGUE[J]. 金属学报, 1997, 33(3): 304-308.
[15]	ZHANG Yun;LIU Yulin;ZHAO Hong'en;HU Zhuangqi Institute of Metal Research; Academia Sinica; Shenyang; ZHU Ziyong; WANG Zhengfu Institute of Corrosion and Protection of Metals; Academia Sinica; Shenyang. INTERGRANULAR AND EXFOLIATION CORROSION BEHAVIOUR OF 8090Al-Li ALLOY[J]. 金属学报, 1991, 27(4): 127-133.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed