Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steel

doi:10.1016/j.jmst.2018.09.043

IMR OpenIR

	Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steel
	Xie, S. L.1,2; Wang, Z. B.1; Lu, K.1
通讯作者	Wang, Z. B.(zbwang@imr.ac.cn)
	2019-03-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	35 期号:3 页码:460-464
摘要	Nanolaminated structures composed of low-angle grain boundaries (LAGBs) possess high thermal stability. In this paper, a gradient nanolaminated (GNL) surface layer with smooth finish was fabricated on an interstitial-free steel by means of surface mechanical rolling treatment. Microstructural observations demonstrated that the average lamellar thickness is about 80 nm in the topmost surface layer and increases with increasing depth. High thermal stability was confirmed in the GNL surface layer after annealing at 500 degrees C. Diffusion measurements showed that effective diffusivity of Cr in GNL layer is 4-6 orders of magnitude higher than lattice diffusivity within the temperature range from 400 to 500 degrees C. This might be attributed to numerous LAGBs or dislocation structures with a higher energy state in the GNL surface layer. This work demonstrates the possibility to advanced chromizing (or other surface alloying) processes of steels with formation of GNL surface layer, so that a thicker alloyed surface layer with a stable nanostructure is achieved. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Gradient nanolaminated structure Interstitial-free steel Diffusion Low-angle grain boundary Surface mechanical rolling treatment
资助者	National Key Research and Development Program of China ; Shenyang National Laboratory for Materials Science
DOI	10.1016/j.jmst.2018.09.043
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0204401] ; Shenyang National Laboratory for Materials Science[2015RP04]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000454506800030
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131110
专题	中国科学院金属研究所
通讯作者	Wang, Z. B.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Xie, S. L.,Wang, Z. B.,Lu, K.. Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(3):460-464.
APA	Xie, S. L.,Wang, Z. B.,&Lu, K..(2019).Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(3),460-464.
MLA	Xie, S. L.,et al."Diffusion behavior of Cr in gradient nanolaminated surface layer on an interstitial-free steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.3(2019):460-464.