Change in Microstructure and Mechanical Properties of Steel Components Surface Layer by Severe Plastic Deformation

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	Change in Microstructure and Mechanical Properties of Steel Components Surface Layer by Severe Plastic Deformation
	Umemoto, Minoru 1; Todaka, Yoshikazu 1; Li, Jinguo 2
刊名	TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN
	2008-12-01
卷号	94 期号:12 页码:616-628
关键词	steel heavy deformation white etching layer nanocrystalline structure drilling hard turning machining shot peening microstructure mechanical properties
ISSN号	0021-1575
通讯作者	Umemoto, Minoru()
英文摘要	The change in microstructure and mechanical properties of machined steel surface was reviewed. Nanocrystalline ferrite structure layer can be produced by high energy shot peening. Nanocrystalline layer consists of equiaxed grains of about 20 nm and distinguished from the adjacent heavily deformed region with a clear boundary. Nanocrsrystallne ferrite structure showed extremely high hardness and substantially slow grain growth. White etching layer can be produced by drilling, hard-turning and sliding wear. The white etching layer thus produced was reaustenitized region due to the deformation heat. White etching layer has clear boundary (transfrmation boundary) between the matrix. White etching layer consist of submicron grained martensite which is much finer than conventional martensite. The white etching layer produced by drilling and sliding contains nanocrystalline layer at the top surface. The thickness of nanocrystalline layer is about 20% of whole white etching layer. The thickness of white etching layer and also nanocrystalline layer increases with the increase in drilling or cutting speed and feed rate. The formation mechanism of white etching layer and nanocrystalline layer were discussed. The thermal and mechanical influence for such layer formation was presented. The influence of white etching layer on the mechanical properties of machined components was introduced.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	IRON STEEL INST JAPAN KEIDANREN KAIKAN
WOS记录号	WOS:000270455100007
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/93139]
专题	金属研究所_中国科学院金属研究所
通讯作者	Umemoto, Minoru
作者单位	1.Toyohashi Univ Technol, Dept Prod Syst Engn, Toyohashi, Aichi 4418580, Japan 2.Chinese Acad Sci, Inst Met Res, Superalloy Div, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Umemoto, Minoru,Todaka, Yoshikazu,Li, Jinguo. Change in Microstructure and Mechanical Properties of Steel Components Surface Layer by Severe Plastic Deformation[J]. TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN,2008,94(12):616-628.
APA	Umemoto, Minoru,Todaka, Yoshikazu,&Li, Jinguo.(2008).Change in Microstructure and Mechanical Properties of Steel Components Surface Layer by Severe Plastic Deformation.TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN,94(12),616-628.
MLA	Umemoto, Minoru,et al."Change in Microstructure and Mechanical Properties of Steel Components Surface Layer by Severe Plastic Deformation".TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN 94.12(2008):616-628.