Effects of electrochemical corrosion characteristis on electrochemical cold drawing of Q235 steel bar | |
Chen, T.J.1; Yang, B.Q.1; Li, B.1; Guo, J.L.1; Zhang, P.2; Cao, X.Z.2 | |
刊名 | Journal of Materials Processing Technology |
2020 | |
卷号 | 275 |
关键词 | Bars (metal) Corrosion rate Corrosive effects Electrochemical sensors Metal drawing Positrons Reduction Sodium chloride Steel corrosion Chemical corrosion Cold drawing Electrochemical corrosion behavior Relaxation effect Simultaneous effects Softening Surface softening Vacancy Defects |
ISSN号 | 09240136 |
DOI | 10.1016/j.jmatprotec.2019.116375 |
英文摘要 | In this work, the electrochemical corrosion behaviors of Q235 steel bar in tap water, NaCl, NaCl+HCl and H2SO4 aqueous solutions, and their effects on electrochemical cold drawing (ECD) were investigated, as well as on cold drawing in air for comparison. The results indicate that the higher the corrosion rate and the more uniform the corrosion are, the larger the decrement of drawing force of ECD is, and the drawing force in the H2SO4 solution is decreased by 39% compared with DIA. Previous electrochemical corrosions in these solutions can slightly soften the steel surface layer, but further obviously decrease the drawing force of ECD, and these two phenomena are all proportional to the corrosion rate. The surface softening of the previous electrochemical corrosions is verified by positron annihilation technology to be mainly attributed to the formation of vacancies. The further decrease of the drawing force should be chiefly contributed to the relaxation effect of the already formed vacancies on dislocations. But the effects of the electrochemical corrosions occurred during ECD are very limited because the time for corrosions is quite short. So the decrease in drawing force might be ascribed to the additional dislocation flux originated from the simultaneous effects of current, chemical corrosion and stress during ECD. © 2019 Elsevier B.V. |
WOS研究方向 | Engineering ; Materials Science |
语种 | 英语 |
出版者 | Elsevier Ltd |
WOS记录号 | WOS:000517123200058 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115317] |
专题 | 材料科学与工程学院 |
作者单位 | 1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Positron Research Platform, Institute of High Energy Physics, CAS, Beijing; 100049, China |
推荐引用方式 GB/T 7714 | Chen, T.J.,Yang, B.Q.,Li, B.,et al. Effects of electrochemical corrosion characteristis on electrochemical cold drawing of Q235 steel bar[J]. Journal of Materials Processing Technology,2020,275. |
APA | Chen, T.J.,Yang, B.Q.,Li, B.,Guo, J.L.,Zhang, P.,&Cao, X.Z..(2020).Effects of electrochemical corrosion characteristis on electrochemical cold drawing of Q235 steel bar.Journal of Materials Processing Technology,275. |
MLA | Chen, T.J.,et al."Effects of electrochemical corrosion characteristis on electrochemical cold drawing of Q235 steel bar".Journal of Materials Processing Technology 275(2020). |
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