Stacking fault energies of Mn, Co and Nb alloyed austenitic stainless steels

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	Stacking fault energies of Mn, Co and Nb alloyed austenitic stainless steels
	S. Lu; Q. M. Hu; B. Johansson; L. Vitos
	2011
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	59 期号:14 页码:5728-5734
摘要	The alloying effects of Mn, Co and Nb on the stacking fault energy (SFE) of austenitic stainless steels, Fe-Cr-Ni with various Ni contents, are investigated via quantum-mechanical first-principles calculations. In the composition range (c(Cr) = 20%, 8 <= c(Ni) <= 20%, 0 <= c(Mn), c(Co), c(Nb) <= 8%, balance Fe) studied here, it is found that Mn always decreases the SFE at 0 K but increases it at room temperature in high-Ni (c(Ni) greater than or similar to 16%) alloys. The SFE always decreases with increasing Co content. Niobium increases the SFE significantly in low-Ni alloys; however, this effect is strongly diminished in high-Ni alloys. The SFE-enhancing effect of Ni usually observed in Fe-Cr-Ni alloys is inverted to an SFE-decreasing effect by Nb for c(Nb) greater than or similar to 3%. The revealed nonlinear composition dependencies are explained in terms of the peculiar magnetic contributions to the total SFE. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[lu, song; johansson, borje; levente vitos] royal inst technol, dept mat sci & engn, se-10044 stockholm, sweden. [hu, qing-miao] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [johansson, borje; levente vitos] uppsala univ, dept phys, condensed matter theory grp, se-75120 uppsala, sweden. [levente vitos] res inst solid state phys & opt, h-1525 budapest, hungary.;lu, s (reprint author), royal inst technol, dept mat sci & engn, se-10044 stockholm, sweden;songlu@mse.kth.se
关键词	Stacking Fault Energy First-principles Electron Theory Austenitic Stainless Steels Temperature-dependence 1st-principles Theory Plastic-deformation Strain-rate Grain-size Transformation Martensite Iron Mechanism
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WOS记录号	WOS:000294091400034
引用统计	被引频次：124[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/321006/30565
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Lu,Q. M. Hu,B. Johansson,et al. Stacking fault energies of Mn, Co and Nb alloyed austenitic stainless steels[J]. Acta Materialia,2011,59(14):5728-5734.
APA	S. Lu,Q. M. Hu,B. Johansson,&L. Vitos.(2011).Stacking fault energies of Mn, Co and Nb alloyed austenitic stainless steels.Acta Materialia,59(14),5728-5734.
MLA	S. Lu,et al."Stacking fault energies of Mn, Co and Nb alloyed austenitic stainless steels".Acta Materialia 59.14(2011):5728-5734.