Effect of solution treatment on microstructure and passivation film properties of 2205 duplex stainless steel

doi:10.13251/j.issn.0254-6051.2020.03.028

Abstract

Abstract:

Solid solution treatment of 2205 duplex stainless steel was carried out at different temperatures. The relationship between solid solution temperature and microstructure and passivation film characteristics of 2205 duplex stainless steel was studied by means of quantitative metallographic method, hardness method, electrochemical polarization test and electrochemical impedance spectroscopy. The results show that σ phase exists at 950 ℃ and distributes at ferrite/austenite grain boundaries, but disappears at 1000 ℃. Ferrite phase ratio increases with the increase of solid solution temperature, while austenite phase ratio shows the opposite rule. The electrochemical and impedance spectroscopy results show that the passivation film has the worst stability and corrosion resistance when solution treated at 950 ℃, and the passivation film has the best stability and corrosion resistance at 1050 ℃.

Key words: 2205 duplex stainless steel, solid solution treatment, microstructure, electrochemistry, passive film

CLC Number:

Xing Shanshan, Qi Haoyu, Zheng Chuanbo. Effect of solution treatment on microstructure and passivation film properties of 2205 duplex stainless steel[J]. HTM, 2020, 45(3): 146-150.

References

[1]Charles J, Chemelle P, 胡锦程, 等. 双相不锈钢的发展现状及未来市场趋势[J]. 世界钢铁, 2011, 11(6): 1-22.
Charles J, Chemelle P, Hu Jincheng, et al. Development status and future market trend of duplex stainless steel[J]. World Steel, 2011, 11(6): 1-22.
[2]张文毓, 侯世忠. 国内外双相不锈钢的应用进展[J]. 装备机械, 2015(3): 62-66.
Zhang Wenyu, Hou Shizhong. Application progress of dual-phase stainless steel at home and abroad[J]. Equipment Machinery, 2015(3): 62-66.
[3]Hwang H, Park Y. Effects of heat treatment on the phase ratio and corrosion resistance of duplex stainless steel[J]. Materials Transactions, 2009, 50(6): 1548-1552.
[4]钟春雷, 谭文一, 张颖, 等. 酸性介质中双相不锈钢与铁素体不锈钢的应力腐蚀研究[J]. 机械, 2008, 35(6): 56-58.
Zhong Chunlei, Tan Wenyi, Zhang Ying, et al. Stress corrosion of duplex stainless steel and ferritic stainless steel in acid medium[J]. Machinery, 2008, 35(6): 56-58.
[5]康利梅. 双相不锈钢的发展及应用综述[J]. 科技广场, 2010, 10(8): 165-168.
Kang Limei. Review of development and application of duplex stainless steel[J]. Science Mosaic, 2010, 10(8): 165-168.
[6]Lilias M, Johansson P, Liu H P. Development of a lean duplex stainless steel[J]. Steel Research International, 2008, 79(6): 463-466.
[7]韩冬. 双相不锈钢局部电化学失效行为与机理的研究[D]. 上海: 复旦大学, 2012.
[8]李奇志, 李慧中. 热处理对双相不锈钢组织与性能的影响[J]. 湖南有色金属, 2006(1): 31-33.
Li Qizhi, Li Huizhong. Effect of microstructure and mechanical property of duplex stainless steel under different heat-treatment[J]. Hunan Nonferrous Metals, 2006(1): 31-33.
[9]向红亮, 刘东, 阮方如, 等. 时效析出相对铸造2507超级双相不锈钢力学及耐蚀性能的影响[J]. 金属学报, 2010, 46(8): 941-945.
Xiang Hongliang, Liu Dong, Ruan Fangru, et al. Effects of aging precipitation on mechanical and corrosion resistance of cast 2507 superduplex stainless steel[J]. Acta Metallurgica Sinica, 2010, 46(8): 941-945.
[10]Chen T H, Yang J R. Effects of solution treatment and continuous cooling on σ-phase precipitation in a 2205 duplex stainless steel[J]. Materials Science and Engineering A, 2001, 311(1/2): 28-41.
[11]Ortiz N, Curiel F F, Lopez V H, et al. Evaluation of the intergranular corrosion susceptibility of UNS S31803 duplex stainless steel with thermoelectric power measurements[J]. Corrosion Science, 2013, 69: 236-244.
[12]Sathirachinda N, Pettersson R, Pan J. Depletion effects at phase boundaries in 2205 duplex stainless steel characterized with SKPFM and TEM/EDS[J]. Corrosion Science, 2009, 51(8): 1850-1860.
[13]胡礼木, Hannerz N E. 酸洗和固溶处理对不锈钢抗点蚀性能的影响[J]. 焊接学报, 2000, 21(1): 83-86.
Hu Limu, Hannerz N E. Effect of pickling and solution treatment on pitting resistance of stainless steel[J]. Transactions of the China Welding Institution, 2000, 21(1): 83-86.
[14]Farga G, Mestra A, Mateo A. Effect of sigma phase on the wear behavior of a super duplex stainless steel[J]. Wear, 2013, 303(2): 584-590.
[15]Chen T H, Yang J R. Effects of solution treatment and continuous cooling on σ-phase precipitation in a 2205 duplex stainless steel[J]. Materials Science and Engineering, 2001, 311: 28-41.
[16]Yang Y, Tan H, Zhang Z, et al. Effect of annealing temperature on the pitting corrosion behavior of UNS S82441 duplex stainless steel[J]. Corrosion, 2013, 69(2): 167-173.
[17]Rosso M, Peter I, Suani D. About heat treatment and properties of duplex stainless steels[J]. Journal of Achievements in Materials and Manufacturing Engineering, 2013, 59(1): 26-36.
[18]Tan H, Jiang Y, Deng B, et al. Effect of annealing temperature on the pitting corrosion resistance of super duplex stainless steel UNS S32750[J]. Materials Characterization, 2009, 60(9): 1049-1054.
[19]张寿禄. 固溶处理对双相不锈钢S32003组织的影响[J]. 特殊钢, 2019, 40(6): 65-67.
Zhang Shoulu. Effect of solid solution treatment on microstructure of duplex stainless steel S32003[J]. Special Steel, 2019, 40(6): 65-67.
[20]Tavares S S M, Pardal J M, Ponzio E, et al. Influence of microstructure on the corrosion resistance of hyperduplex stainless steel[J]. Materials and Corrosion, 2010, 61(4): 313-317.
[21]Angelini E, Benedetti B D, Rosalbino F. Microstructural evolution and localized corrosion resistance of an aged superduplex stainless steel[J]. Corrosion Science, 2004, 46(6): 1351-1367.
[22]汤瑞瑞, 龚利华. 固溶温度对2101节镍型双相不锈钢组织及性能的影响[J]. 钢铁钒钛, 2013, 34(4): 73-77.
Tang Ruirui, Gong Lihua. Influence of solution temperature on structures and properties of low-nickel duplex stainless steel 2101[J]. Iron Steel Vanadium Titanium, 2013, 34(4): 73-77.
[23]赵江涛, 任常飞, 张柳丽, 等. 元素Cr、Ni对不锈钢耐蚀性能影响[J]. 现代机械, 2013(5): 88-91.
Zhao Jiangtao, Ren Changfei, Zhang Liuli, et al. Influence of elements Cr and Ni on corrosion resistance of stainless steel[J]. Modern Machinery, 2013(5): 88-91.