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首页> 外文期刊>International Journal of Electrochemical Science >Characterization of Strain-induced Martensite and Anodic Polarization Properties of a Newly Developed Lean Duplex Stainless Steel 2002 after Tensile Deformation
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Characterization of Strain-induced Martensite and Anodic Polarization Properties of a Newly Developed Lean Duplex Stainless Steel 2002 after Tensile Deformation

机译：拉伸变形后新开发的贫双相不锈钢2002的应变诱导马氏体和阳极极化特性的表征

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摘要

Strain-induced martensite in a newly developed lean duplex stainless steel (DSS) 2002 after tensiledeformation was characterized by optical metallographic microscopy, scanning electron microscopy,transmission electron microscopy, X-ray diffraction and electron backscatter diffraction techniques.Magnetic property measurement and HV hardness test of specimens with different strains wereperformed. The polarization curves of DSS 2002 after tensile deformation in 3.5 wt.% NaCl (pH 7)and 3.5 wt.% NaCl + 0.01 mol/L HCl (pH 2) were measured. The results showed that as the tensiledeformation increased from 0 to 40%, the volume fraction of strain-induced martensite, themagnetization saturation and the micro-hardness values increased. The pitting potential of DSS 2002 in3.5 wt.% NaCl solution was not greatly influenced by deformation but the critical passivation currentdensity of specimens increased with increasing deformation. While, the pitting potential of DSS 2002in 3.5 wt.% NaCl + 0.01 mol/L HCl decreased with the increase of tensile deformation. The effect oftensile deformation on anodic polarization properties of DSS 2002 in chloride solutions of different pHwas discussed.
机译：通过光学金相显微镜，扫描电子显微镜，透射电子显微镜，X射线衍射和电子背散射衍射技术对拉伸变形后的新型贫双相不锈钢（DSS）2002中的应变诱发马氏体进行了表征，并进行了磁性能测量和HV硬度测试。对不同应变的标本进行分析。测量了在3.5 wt。％NaCl（pH 7）和3.5 wt。％NaCl + 0.01 mol / L HCl（pH 2）中拉伸变形后DSS 2002的极化曲线。结果表明，随着拉伸变形从0％增加到40％，应变诱发马氏体的体积分数，磁化饱和度和显微硬度值增加。 DSS 2002在3.5 wt％的NaCl溶液中的点蚀电位不受变形的影响很大，但是随着变形的增加，样品的临界钝化电流密度增加。同时，DSS 2002在3.5 wt。％NaCl + 0.01 mol / L HCl中的点蚀电位随拉伸变形的增加而降低。讨论了常形变对不同pH值氯化物溶液中DSS 2002阳极极化特性的影响。

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