Effects of Previous Electrochemical and Chemical Corrosions on Surface Layer Softening During Electrochemical Cold Drawing of Q235 Bar

doi:10.1007/s12540-020-00775-w

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	Effects of Previous Electrochemical and Chemical Corrosions on Surface Layer Softening During Electrochemical Cold Drawing of Q235 Bar
	Chen, T. J.; Yang, B. Q.
刊名	METALS AND MATERIALS INTERNATIONAL
	2021-12-01
卷号	27 期号:12 页码:5299-5313
关键词	Electrochemical cold drawing Electrochemical corrosion Chemical corrosion Surface layer softening Vacancy Additional dislocation flux
ISSN号	1598-9623
DOI	10.1007/s12540-020-00775-w
英文摘要	Influences of previous electrochemical corrosion and chemical corrosion in H(2)SO(4)aqueous solution on surface layer softening during electrochemical cold drawing (ECD) of Q235 steel bar were investigated. Results indicate that these two corrosions all further soften the steel during the subsequent ECD and make the ECD to easier conduct, and the effect from the former corrosion is larger than that from the latter one. Two modes of corrosion can slightly soften or plasticize the bar surface layer due to the increased vacancy clusters, but the contribution of this softening or plasticizing itself to the further softening during ECD is very limited, and the further softening should be mainly attributed to the relaxation of dislocations through absorbing the vacancy clusters and the resulted weakening of work hardening. The current applied during the electrochemical corrosion can promote more vacancy clusters to form in a deeper region beneath the bar surface, and thus the relaxing degree for the dislocations and the influence region are larger than those from the chemical corrosion respectively, resulting in the greater softening.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	KOREAN INST METALS MATERIALS
WOS记录号	WOS:000554341900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155140]
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, Peoples R China
推荐引用方式 GB/T 7714	Chen, T. J.,Yang, B. Q.. Effects of Previous Electrochemical and Chemical Corrosions on Surface Layer Softening During Electrochemical Cold Drawing of Q235 Bar[J]. METALS AND MATERIALS INTERNATIONAL,2021,27(12):5299-5313.
APA	Chen, T. J.,&Yang, B. Q..(2021).Effects of Previous Electrochemical and Chemical Corrosions on Surface Layer Softening During Electrochemical Cold Drawing of Q235 Bar.METALS AND MATERIALS INTERNATIONAL,27(12),5299-5313.
MLA	Chen, T. J.,et al."Effects of Previous Electrochemical and Chemical Corrosions on Surface Layer Softening During Electrochemical Cold Drawing of Q235 Bar".METALS AND MATERIALS INTERNATIONAL 27.12(2021):5299-5313.