Cr、Mo对超低碳双相不锈钢的σ-相析出行为和耐点蚀性能的影响

特殊钢 ›› 2015, Vol. 36 ›› Issue (3): 57-60.

Cr、Mo对超低碳双相不锈钢的σ-相析出行为和耐点蚀性能的影响

李惠^1,2，宋志刚²，丰涵²，郑文杰²，张颖¹

1西安建筑科技大学，西安710055 ；
2钢铁研究总院，北京100081

收稿日期:2014-12-22 出版日期:2015-06-01 发布日期:2022-08-18
通讯作者: 宋志刚
作者简介:李惠(1988-),女，硕士研究生(西安建筑科技大学)，西安理工大学(本科)毕业，双相不锈钢组织变化及腐蚀行为的研究。

Effect of Cr and Mo on σ- Phase Precipitation Behavior and Pitting Corrosion Resistance Properties of Ultra-Low-Carbon Dual Phase Stainless Steel

Li Hui^1,2, Song Zhigang² , Feng Han² , Zheng Wenjie² ， Zhang Ying¹

1 University of Architecture and Technology, Xi'an 710055 ；
2 Central Iron and Steel Research Institute, Beijing 100081

Received:2014-12-22 Published:2015-06-01 Online:2022-08-18

摘要/Abstract

摘要： 通过Thermo-Calc热力学计算、金相和电化学方法分析和研究了1 050~1120℃固溶的00Cr21Ni2Mn5N、00Cr22Ni5Mo3N、00Cr25Ni7Mo3N、00Cr27Ni7Mo5N四种典型超低碳双相不锈钢在5001~100℃时效后σ相的析出规律和σ相含量对四种双相不锈钢点蚀电位的影响。结果表明,σ相析出量随着时效温度的升高呈现先增加后减小的趋势,并且随着双相不锈钢中铬-钼含量（/%）依次20.98-0.03,22.41-3.16,25.30-3.46,26.69-4.74递增时,σ相析出量峰值递增,依次为4.9%,22.5%,27.0%,40.5%,同时σ相完全溶解温度提高,依次为660,950,1 060,1100℃;σ相析出量越大超低碳双相不锈钢耐点蚀性能越低,4种钢的σ相析出峰值对应的E_b100值依次为-94.0,100.1,260.2,117.7 mV。

关键词: 超低碳双相不锈钢, Cr , Mo , σ-相, 析出行为, 点蚀电位

Abstract: The σ-phase precipitation rule in four kinds of typical ultra-low-carbon dual phase stainless steel 00Cr21Ni2Mn5N, 00Cr22Ni5Mo3N, 00Cr25Ni7Mo3N and 00Cr27Ni7Mo5N solid-solution-treaded at 1 050 ~ 1 120 °C and aged at 500 ~ 1 100 °C and the effect of σ-phase content on pitting corrosion potential of four kinds of ultra-low-carbon dual phase stainless steel are analyzed and studied by Thermo-Calc thermodynamic calculation, metallurgraphy and electrochemical method. Results show that with increasing ageing temperature the a-phase precipitation amount increases at earlier and decreases later, and with chromium-molybdenum content (/% ) in ultra-low-carbon dual phase stainless steel increasing progressively in order of 20. 98-0. 03, 22. 41-3. 16, 25. 30-3. 46 and 26. 69-4 74, the peak amount of σ- phase precipitation increases progressively in order of 4. 9% , 22. 5% , 27. 0% and 40. 5% , while the σ-phase complete dissolution temperature increases in order of 660 °C , 950°C, 1 060 °C and 1 100 °C ； the more amount of σ- phase precipitation, the lower the pitting corrosion resistance of ultra-low-carbon dual phase stainless steel, and the corresponding E_b100 value to σ- phase precipitation peak of four kinds of steel is in order of -94. 0 mV, 100. 1 mV, 260. 2 mV and 117. 7 mV.

李惠, 宋志刚, 丰涵, 郑文杰, 张颖. Cr、Mo对超低碳双相不锈钢的σ-相析出行为和耐点蚀性能的影响[J]. 特殊钢, 2015, 36(3): 57-60.

Li Hui, Song Zhigang , Feng Han , Zheng Wenjie, Zhang Ying. Effect of Cr and Mo on σ- Phase Precipitation Behavior and Pitting Corrosion Resistance Properties of Ultra-Low-Carbon Dual Phase Stainless Steel[J]. Special Steel, 2015, 36(3): 57-60.

参考文献

[1]lacoviello F, Galland J, Habashi M. A Thermal Outgassing Method (t. o. m) to Measure the Hydrogen Diffusion Coefficients in Austenitie, Austeno-ferritic and Ferritic-perlitic Steels [J]. Corrosion Science, 1998,40(8): 1281-1293.
[2]Maehara Y,Masao K, Fujino N. Precipitation of ct Phase Precipitation in 25Cr-7Ni-3Mo Duplex Phase Stainless Steels [J]. Transaction ISIJ, 1992,8(8 )：685-700.
[3]Nilsson J O,Kangas P,Karlsson T,el al. Mechanical Properties,Microstructural Stability and Kinetics of ( Alpha) -phase Formation in 29Cr-6Ni-2Mo-0.38N Super Duples Stainless Steel [J]. Metallurgical and Materials Transaction,2000,31A(1) ：35-45.
[4]Lopez N, Cid M, Puiggali M. Influence of σ-phase on Mecdhanical Properties and Corrosion Resistance of Duplex Stainless Steels [ J ]. Corrosion Science, 1999,41(8) ： 16-31.
[5]吴玖.双相不锈钢[M].北京:冶金工业出版社,1999.
[6]宋志刚，郑文杰,王汉东，等.固溶温度对00Cr22Ni5Mo3N钢组织及力学性能的影响[J].钢铁研究学报,2004,16(6) ：47-50.
[7]郭海生.00Cr21Ni2Mn5N热处理及热加工工艺的研究[D].昆明：昆明理工大学,2008.
[8]吴忠忠.超级双相不锈钢00Cr25Ni7Mo4N热处理工艺和热塑性研究[D],昆明:昆明理工大学,2006.
[9]黄盛.不同N、W含量对00Cr27Ni7Mo5N组织及性能的影响 [D].昆明：昆明理工大学,2011.
[10]邢娜.Fe-Cr-Ni-C-N多元合金相平衡的热力学研究[D].沈阳:东北大学,2009.
[11]Angelini E, Benedetti B D, Rosalbino F. Microstructural Evolution and Localized Corrosion Resistance of an Aged Super Duplex Stainless Steel[J]. Corrosion Science,2004,46 ： 135-137.
[12]Adhe K N, Kain V,Madangopal K,et al. Influence of Sigma-Phase Formation on the Localized Corrosion Behavior of a Duplex Stainless Steel[J]. Material Enginerring Performance,1996,5(4) ：500-502.

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