Crystallographic account of nano-scaled intergrowth of M2B-type borides in nickel-based superalloys

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	Crystallographic account of nano-scaled intergrowth of M2B-type borides in nickel-based superalloys
	X. B. Hu; Y. L. Zhu; X. L. Ma
	2014
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	68 期号:15 页码:70-81
摘要	M2B-type borides in nickel-based superalloys containing boron subjected to long-term aging treatments were investigated by means of analytical transmission electron microscopy. Contrast analysis and electron diffraction show that the boride precipitations have dual-phase structures (I4/mcm, C16; Fddd, C-b) with a high density of stacking faults. The faulted planes and displacement vectors are determined as (110)(C16) and [1 (1) over bar1](C16)/4 in C16 structure and (100)(Cb) and [011](Cb)/4 in C-b structure. Structural models based on a polyhedron of square anti-prisms are proposed not only to rationalize the stacking faults, 60 degrees rotation twin and the intergrowth of structural variants, but also to interpret the newly observed structure in M2B-type borides. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[hu, x. b. ; zhu, y. l. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; ma, xl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; xlma@imr.ac.cn
关键词	M2b-type Boride Polytypic Structure Intergrowth Nickel-based Superalloy Transmission Electron Microscopy M7c3 Carbides Alloy Boron Chromium Phase Steel
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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/321006/72854
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. B. Hu,Y. L. Zhu,X. L. Ma. Crystallographic account of nano-scaled intergrowth of M2B-type borides in nickel-based superalloys[J]. Acta Materialia,2014,68(15):70-81.
APA	X. B. Hu,Y. L. Zhu,&X. L. Ma.(2014).Crystallographic account of nano-scaled intergrowth of M2B-type borides in nickel-based superalloys.Acta Materialia,68(15),70-81.
MLA	X. B. Hu,et al."Crystallographic account of nano-scaled intergrowth of M2B-type borides in nickel-based superalloys".Acta Materialia 68.15(2014):70-81.