High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel

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	High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel
其他题名	High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel
	Chen Chunhuan 1; Ren Ruiming 1; Chen Pintong 2
	2015
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	44 期号:9 页码:2330-2333
摘要	A nano-structured layer was prepared by high-energy-shoot-peening on the surface of SUS430 stainless steel (SS). The oxidation behavior of the nano-structured layer in various atmospheres was studied through X-ray diffraction (XRD), thermal analysis (TGA), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), and the effect of surface self nanocrystallization on the oxidation resistance of SUS430 SS was also investigated. The results show that the nano-structured layer is oxidized so violently in the early stage that it gains mass in a straight line rule, but it needs just a short time for being passivated. Thin and compacted oxide film is obtained, the thickness of which is one fourth of that of original surface, resulting in a lower oxidation rate than original surface. Therefore, the total mass of gain is merely one third of the original one, and the oxidation resistance is improved obviously. The reason for this is that the surface self nanocrystallization enlarges the grain boundary area, increases the nucleation rate of oxide, and also provides more diffusion channels for element, consequently promoting the selective oxidation of Cr. The oxide formed in the top surface layer is Fe rich oxide with loose structure, which has little contribution to the oxidation resistance. Beneath the Fe rich oxide, compacted Cr rich oxide forms next to the substrate, which resists the further oxidization of substrate well. Continuous oxide film grows more easily on the nano-structured surface layer than on the original surface. Benefited from its low internal stress and high toughness, the oxide film grown on the nano-structured layer has higher bonding strength to the substrate.
关键词	RESISTANCE stainless steel selective oxidation surface self nanocrystallization
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5522653
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/146583
专题	中国科学院金属研究所
作者单位	1.大连交通大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Chen Chunhuan,Ren Ruiming,Chen Pintong. High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel[J]. RARE METAL MATERIALS AND ENGINEERING,2015,44(9):2330-2333.
APA	Chen Chunhuan,Ren Ruiming,&Chen Pintong.(2015).High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel.RARE METAL MATERIALS AND ENGINEERING,44(9),2330-2333.
MLA	Chen Chunhuan,et al."High-Temperature Oxidation Behavior of Nano-Structured Layer of SUS430 Stainless Steel".RARE METAL MATERIALS AND ENGINEERING 44.9(2015):2330-2333.