Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants

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	Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants
	X. Q. Hu; N. M. Xiao; X. H. Luo; D. Z. Li
	2010
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	26 期号:9 页码:817-822
摘要	Thermodynamic calculation, thermal analysis, and identification and observation of precipitates have been carried out on a W-alloyed 10 wt pct Cr steel by means of ThermoCalc program, differential thermal analysis (DTA), X-ray diffraction (XRD) and transmission electron microscopy (TEM) with an energy dispersive X-ray spectrometer, respectively. Several critical phase transformation points were determined by combining experimental results with calculations. Two individually stable phases of Nb(C, N) and VN, instead of one single phase MX (X: C, N), M(23)C(6) or Laves phases, were predicted in the calculated equilibrium phase diagram. An unstable elongated M(7)C(3) with relatively higher Cr was detected unexpectedly in the normalized and tempered steel. Two kinds of spherical Nb(C, N) with different size were recognized as the primary and the secondary precipitates of Nb(C, N) which contain different V contents. It was observed that one kind of complex precipitate in a special V-wing shape was resulted from two plate-like VN adhering to coarse primary spherical Nb(C, N).
部门归属	[hu, xiaoqiang; xiao, namin; luo, xinghong; li, dianzhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;li, dz (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;dzli@imr.ac.cn
关键词	Heat Resistant Steel Mx (x: c Phase Transformation n) Microstructure Precipitate Creep-rupture Strength Modified 9cr-1mo Steel Microstructural Evolution Mx Carbonitride Phase
URL	查看原文
WOS记录号	WOS:000282790800009
引用统计	被引频次：6[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/321006/31162
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Q. Hu,N. M. Xiao,X. H. Luo,et al. Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants[J]. Journal of Materials Science & Technology,2010,26(9):817-822.
APA	X. Q. Hu,N. M. Xiao,X. H. Luo,&D. Z. Li.(2010).Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants.Journal of Materials Science & Technology,26(9),817-822.
MLA	X. Q. Hu,et al."Transformation Behavior of Precipitates in a W-alloyed 10 wt pct Cr Steel for Ultra-supercritical Power Plants".Journal of Materials Science & Technology 26.9(2010):817-822.