Microstructural evolution and low temperature impact toughness of a Fe-13%Cr-4%Ni-Mo martensitic stainless steel

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	Microstructural evolution and low temperature impact toughness of a Fe-13%Cr-4%Ni-Mo martensitic stainless steel
	Y. Y. Song; D. H. Ping; F. X. Yin; X. Y. Li; Y. Y. Li
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:3 页码:614-618
摘要	The microstructural evolution of a low carbon Fe-13%Cr-4%Ni-Mo (wt.%) martensitic stainless steel has been studied using transmission electron microscopy (TEM) and three-dimensional atom probe (3DAP). The as-quenched sample has a typical lath martensite structure, but carbon atoms were found to form ultra-fine clusters, or carbon-enriched regions, in the martensite. After a single-stage tempering at 680 degrees C. the steel mainly consists of the martensite and a certain amount of fine M(23)C(6) carbides, which act as heterogeneous nucleation sites of the reversed austenite formed in the two-stage tempered (680 degrees C x 4 h + 600 degrees C x 4 h) samples. 3DAP investigations have revealed that the Ni, Cr and Mn atoms are enriched in the reversed austenite as contrasted with the martensite. Phosphorus atoms were uniformly distributed only in martensite. carbon was not detected in either martensite or austenite, and there was no segregation at the martensite-austenite interfaces. Those partitioning behaviors of the alloying elements were thought to be a factor contributing to the stability of the reversed austenite. High impact toughness at low temperature was obtained due to the existence of the reversed austenite. (c) 2009 Published by Elsevier B.V.
部门归属	[song, y. y.; li, x. y.; li, y. y.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [ping, d. h.; yin, f. x.] natl inst mat sci, tsukuba, ibaraki 3050047, japan.;li, xy (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;xyli@imr.ac.cn
关键词	Martensitic Stainless Steel Transmission Electron Microscopy (Tem) Reversed Austenite Microstructure Impact Toughness Free Maraging-steel Mechanical-properties Retained Austenite Precipitation Embrittlement Stability Strength M23c6
URL	查看原文
WOS记录号	WOS:000273983800028
引用统计	被引频次：117[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/321006/31449
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Y. Song,D. H. Ping,F. X. Yin,et al. Microstructural evolution and low temperature impact toughness of a Fe-13%Cr-4%Ni-Mo martensitic stainless steel[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(3):614-618.
APA	Y. Y. Song,D. H. Ping,F. X. Yin,X. Y. Li,&Y. Y. Li.(2010).Microstructural evolution and low temperature impact toughness of a Fe-13%Cr-4%Ni-Mo martensitic stainless steel.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(3),614-618.
MLA	Y. Y. Song,et al."Microstructural evolution and low temperature impact toughness of a Fe-13%Cr-4%Ni-Mo martensitic stainless steel".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.3(2010):614-618.