Effect of Laser Surface Treatment on the Corrosion Resistance of 316L Stainless Steel

被引：0
作者：
Yuan S.-S. [1 ]
Wang D.-Z. [1 ,2 ]
Wang J.-T. [1 ,2 ]
Wang C.-G. [2 ]
He Q.-B. [2 ]
Cai X.-N. [2 ]
Hu W. [1 ,2 ]
机构：
[1] Chongqing Key Laboratory of Corrosion-resistant Alloys, Chongqing Materials Research Institute Co., Ltd, Chongqing
[2] National Engineering Research Center for Instrument Functional Materials, Chongqing Materials Research Institute Co., Ltd, Chongqing
来源：
Surface Technology | 2021年 / 50卷 / 07期
关键词：
austenitic stainless steel; corrosion resistance; heat treatment state; laser surface treatment;
D O I：
10.16490/j.cnki.issn.1001-3660.2021.07.007
中图分类号：
学科分类号：
摘要：
The difference of microstructure and corrosion resistance of annealed and variable shape stainless steel matrix during laser processing was studied, master the influence law of laser power on the corrosion resistance of material surface. Laser surface melting treatment using Nd: YAG was done with 316L stainless steel at different heat treatment conditions, electron channeling contrast imaging (ECC) was employed to characterize and analyze the microstructure, and Gamry600 electrochemical workstation was used to experiment the polarization curve and impedance diagram for the sake of studying corrosion resistance evolution during laser surface treatment. 316L stainless steels at annealing condition and deformation condition have similar dynamic potential polarization curve and EIS maps tendency in 3.5wt% NaCl solution. Meanwhile, the fitting data indicated that corrosion potential of laser sample was −0.438 V (SCE), slightly higher than as-received sample (−0.556 V), but the corrosion current of the laser sample was smaller than that of the as-received sample. It means that laser surface treatment could reduce the corrosion rate of the material surface. The difference is the modification zone on as-draw matrix presented uniform interfacial transition and better binding property than annealing samples. With laser power increasing, the melting arc radius of the 400 W sample was largest, then the polarization curve and EIS map fluctuated in the same magnitude on 200 W and 300 W samples. The corrosion resistance of 316L stainless steel has gradually enhanced after laser surface treatment, while the laser power has no obvious effect on the surface corrosion resistance. © 2021, Chongqing Wujiu Periodicals Press. All rights reserved.
引用
收藏
页码：83 / 89
页数：6
相关论文
共 26 条
  • [1] RUAN Yu-zhen, ZHANG Zhen-can, CHU Feng-min, Et al., Intergranular attack behavior of 316 type stainless steel, Physics examination and testing, 18, 6, pp. 4-6, (2000)
  • [2] LI Jun-mei, Intercrystalline corrosion and protection of austenic stainless steel, Phosphate & compound fertili-zer, 14, 3, pp. 75-77, (1999)
  • [3] SHI Sheng-tai, ZHANG Yun-shu, XU Nai-xin, Et al., Development and prospect of metal corrosion and protection technology, Corrosion & protection, 11, 1, pp. 3-41, (1990)
  • [4] RAHIMI S, ENGELBERG D L, MARROW T J., Charac-terisation of grain boundary cluster compactness in auste-nitic stainless steel, Materials science and technology, 26, 6, pp. 670-675, (2010)
  • [5] DING Yang-xi, ZHOU Li-zhi, Status and development of laser surface treating, Metal hotworking technology, 36, 6, pp. 69-72, (2007)
  • [6] YE Si-you, LIU Jian-yong, YANG Wei, Microstructure and properties of laser cladded 316L stainless steel layer, Surface technology, 47, 3, pp. 48-53, (2018)
  • [7] ANTHONY T R, CLINE H E., Surface rippling induced by surface-tension gradients during laser surface melting and alloying, Journal of applied physics, 48, 9, pp. 3888-3894, (1977)
  • [8] YANG Sen, WANG Zhan-jie, KOKAWA H, Et al., Grain boundary engineering of 304 austenitic stainless steel by laser surface melting and annealing, Journal of materials science, 42, 3, pp. 847-853, (2007)
  • [9] KAUL R, MAHAJAN S, KAIN V, Et al., Laser surface treatment for enhancing intergranular corrosion resistance of AISI type 304 stainless steel, Corrosion, 64, 10, pp. 755-763, (2008)
  • [10] KUMAR S, BANERJEE M K., Desensitization of type 316 stainless steel by laser surface melting, Anti-corrosion methods and materials, 47, 1, pp. 20-25, (2000)
123