Effect of carbon and niobium on the microstructure and impact toughness of a high silicon 12% Cr ferritic/martensitic heat resistant steel

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	Effect of carbon and niobium on the microstructure and impact toughness of a high silicon 12% Cr ferritic/martensitic heat resistant steel
	Z. F. Ye; P. Wang; D. Z. Li; Y. T. Zhang; Y. Y. Li
	2014
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	616 页码:12-19
摘要	In order to guide the design of 9-12% Cr ferritic/martensitic (F/M) heat resistant steels appropriate for use in accelerator-driven system, the impact toughness and behavior of precipitation of a 12% Cr F/M heat resistant steel containing high C and Si concentrations have been investigated. Particular focus has been given to the interaction of carbon and carbonitride-forming element. Because of the presence of primary NbC and a large amount of M23C6, the impact toughness of the investigated steel was much lower than that of the commercial 9-12% Cr F/M heat resistant steels. The primary NbC crystallizes directly from liquid metal when the Nb concentration is higher than a critical value. The critical value of Nb decreases with increase in the carbon concentration. In addition, the higher content and faster precipitation kinetics of M23C6 in the investigated steel during the tempering heat treatment also lowers the impact toughness. (C) 2014 Elsevier B.V. All rights reserved.
部门归属	[ye, zhongfei ; wang, pei ; li, dianzhong ; li, yiyi] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zhang, yutuo] shenyang ligong univ, shenyang 110159, peoples r china. ; wang, p (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; pwang@imr.ac.cn
关键词	High Silicon 12% Cr Ferritic/martensitic Steel Primary Nbc Carbonitride Thermodynamic Calculations Impact Toughness Ferritic Martensitic Steels Si-enriched Steels Mechanical-properties Lead-bismuth Power-plant Corrosion-resistance Nuclear-reactors Creep Strength Temperature Precipitation
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/321006/73477
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. F. Ye,P. Wang,D. Z. Li,et al. Effect of carbon and niobium on the microstructure and impact toughness of a high silicon 12% Cr ferritic/martensitic heat resistant steel[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2014,616:12-19.
APA	Z. F. Ye,P. Wang,D. Z. Li,Y. T. Zhang,&Y. Y. Li.(2014).Effect of carbon and niobium on the microstructure and impact toughness of a high silicon 12% Cr ferritic/martensitic heat resistant steel.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,616,12-19.
MLA	Z. F. Ye,et al."Effect of carbon and niobium on the microstructure and impact toughness of a high silicon 12% Cr ferritic/martensitic heat resistant steel".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 616(2014):12-19.