Microstructure and grain orientation evolution of a specially shaped shroud during directional solidification process

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	Microstructure and grain orientation evolution of a specially shaped shroud during directional solidification process
	H. Q. Hao; W. G. Jiang; G. Xie; G. Zhang; Y. Z. Lu; J. Zhang; L. H. Lou
	2013
发表期刊	Progress in Natural Science-Materials International
ISSN	1002-0071
卷号	23 期号:2 页码:211-215
摘要	The microstructure and the grain orientations of one shroud prepared by directional solidification process have been investigated using metallographic method and electronic backscatter diffraction (EBSD). The results indicate that the solidification process of the tested shroud is composed of three steps: dendritic branching, the break-up and drift of the dendrite arms and the solidification of the residual liquid. Misoriented grains were formed between the primarily solidified dendrite stems during the process of recalescence which was caused by the accumulation of the solidification latent heat. A low angle grain boundary of 6 degrees was produced across the impinging dendrite fronts. (c) 2013 Chinese Materials Research Society. Production and hosting by Elsevier B.V. All rights reserved.
部门归属	[hao, hongquan ; jiang, weiguo ; xie, guang ; zhang, gong ; lu, yuzhang ; zhang, jian ; lou, langhong] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; zhang, j (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; jianzhang@imr.ac.cn
关键词	Directional Solidification Shroud Dendrite Undercooling Low Angle Grain Boundary Single-crystal Superalloy Undercooled Melts Turbine-blades Dendritic Growth Base Superalloys Refinement Simulation Nonequilibrium Mechanism Castings
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71249
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Q. Hao,W. G. Jiang,G. Xie,et al. Microstructure and grain orientation evolution of a specially shaped shroud during directional solidification process[J]. Progress in Natural Science-Materials International,2013,23(2):211-215.
APA	H. Q. Hao.,W. G. Jiang.,G. Xie.,G. Zhang.,Y. Z. Lu.,...&L. H. Lou.(2013).Microstructure and grain orientation evolution of a specially shaped shroud during directional solidification process.Progress in Natural Science-Materials International,23(2),211-215.
MLA	H. Q. Hao,et al."Microstructure and grain orientation evolution of a specially shaped shroud during directional solidification process".Progress in Natural Science-Materials International 23.2(2013):211-215.