Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar

doi:10.1007/s42243-021-00675-2

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	Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar
	Guo, J. L.; Chen, T. J.
刊名	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
	2021-10
卷号	29 期号:5 页码:819-835
关键词	Electrochemical corrosion Electrochemical cold drawing Surface layer softening Vacancy Additional dislocation flux
ISSN号	1006-706X
DOI	10.1007/s42243-021-00675-2
英文摘要	The effects of H2SO4 concentration and current in electrochemical corrosion on surface layer softening or plasticizing of Q235 steel bar and their effects on subsequent electrochemical cold drawing (ECD) were investigated. The results indicate that the electrochemical corrosion can soften or plasticize the surface layer of Q235 steel bar and then make the subsequent ECD be conducted more easily. The softening degree and thickness of the surface layer are continuously enhanced with increasing corrosion rate, i.e., increasing H2SO4 concentration or current, due to the generation of more vacancy clusters in deeper regions of surface layer. These vacancy clusters then relax dislocations through being absorbed during ECD, and the formation and movement of additional dislocation flux are thereby enhanced, resulting in the further obvious decrease in the drawing force. It is also due to the enhanced formation and movement of additional dislocation flux that the dislocation density and thus the hardness of the surface layer are decreased, as well as that the texture structure is weakened. These behaviors are enhanced as the corrosion rate increases.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000710868700001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150041]
专题	兰州理工大学
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Guo, J. L.,Chen, T. J.. Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2021,29(5):819-835.
APA	Guo, J. L.,&Chen, T. J..(2021).Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,29(5),819-835.
MLA	Guo, J. L.,et al."Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 29.5(2021):819-835.