Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment

IMR OpenIR

	Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment
	S.; Wang Guo, Z. B.; Wang, L. M.; Lu, K.
	2014
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	258 页码:329-336
摘要	By means of surface mechanical attrition treatment (SMAT), a gradient nanostructured surface layer was fabricated on a ferritic-martensitic (F-M) steel plate. Its aluminizing behaviors were investigated during a packed aluminization process and a subsequent diffusion annealing treatment at lower temperatures. In comparison with the initial sample, a much thicker Al5Fe2 layer was formed on the SMAT sample after the packed aluminization, with a growth constant of similar to 3 times higher at 600 degrees C. The transformation kinetics from Al5Fe2 phase into AlFe phase and alpha-(Fe,Al) solid solution are also enhanced in the subsequent annealing treatment at similar to 700 degrees C. The enhanced aluminizing kinetics originates from the increased atomic diffusivities by numerous grain boundaries and a higher concentration of vacancies in the nanostructured surface layer. With the determined growth kinetics, a duplex aluminizing process was demonstrated for achieving a gradient surface layer with lower-Al containing aluminides below the tempering temperature of F-M steel. (C) 2014 Elsevier B.V. All rights reserved.
部门归属	[guo, s. ; wang, z. b. ; wang, l. m. ; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; wang, zb (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zbwang@imr.ac.cn
关键词	Nanostructured Surface Mechanical Attrition Treatment (Smat) Aluminization Diffusion Ferritic-martensitic Steel Low-carbon Steel Fe-al System Reactive Diffusion Nanostructured Fe Coating Formation Alloy-steels Iron Layer Cr Interdiffusion
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73808
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S.,Wang Guo, Z. B.,Wang, L. M.,et al. Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment[J]. Surface & Coatings Technology,2014,258:329-336.
APA	S.,Wang Guo, Z. B.,Wang, L. M.,&Lu, K..(2014).Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment.Surface & Coatings Technology,258,329-336.
MLA	S.,et al."Lower-temperature aluminizing behaviors of a ferritic-martensitic steel processed by means of surface mechanical attrition treatment".Surface & Coatings Technology 258(2014):329-336.