Microstructure investigation of NiAl-Cr(Mo) interface in a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal

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	Microstructure investigation of NiAl-Cr(Mo) interface in a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal
	Y. X. Chen; C. Y. Cui; J. T. Guo; D. X. Li
	2004
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	373 期号:1-2 页码:279-285
摘要	The microstructure of a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal in as-processed and heat-treated states has been studied by means of scanning electron microscopy and high resolution electron microscopy (HREM). The microstructure of the NiAl-Cr(Mo) eutectic was characterized by lamellar Cr(Mo) phases embedded within NiAl matrix with common growth direction of <111>. The interface between NiAl and lamellar Cr(Mo) did not have any transition layers. Misfit dislocations were observed at the NiAl-cr(Mo) interface. In addition to lamellar Cr(Mo) phases, coherent Cr(Mo, Ni, Al) precipitates and NiAl precipitates were also observed in the NiAl matrix and lamellar Cr(Mo) phases, respectively. After hot isostatic pressing and heat treatment, the NiAl-Cr(Mo) interfaces became smooth and straight. Square array of misfit dislocations was directly observed at the (001) interface between NiAl and Cr(Mo, Ni, Al) precipitate. The configuration of misfit dislocation network showed a generally good agreement with prediction based on the geometric O-lattice model. (C) 2004 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, solids atom imaging div, shenyang 110016, peoples r china.;chen, yx (reprint author), univ new orleans, adv mat res inst, sci bldg 2023, new orleans, la 70148 usa;yxchzh@yahoo.com
关键词	Nial Tem Microstructure O-lattice Model Misfit Dislocation Resolution Electron-microscopy Nialfe Matrix Composites Rod-plate Transition In-situ Composites Phase Cr Deformation
URL	查看原文
WOS记录号	WOS:000221779200033
引用统计	被引频次：12[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/321006/35331
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. X. Chen,C. Y. Cui,J. T. Guo,et al. Microstructure investigation of NiAl-Cr(Mo) interface in a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2004,373(1-2):279-285.
APA	Y. X. Chen,C. Y. Cui,J. T. Guo,&D. X. Li.(2004).Microstructure investigation of NiAl-Cr(Mo) interface in a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,373(1-2),279-285.
MLA	Y. X. Chen,et al."Microstructure investigation of NiAl-Cr(Mo) interface in a directionally solidified NiAl-Cr(Mo) eutectic alloyed with refractory metal".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 373.1-2(2004):279-285.