The Wyckoff positional order and polyhedral intergrowth in the M3B2- and M5B3-type boride precipitated in the Ni-based superalloys

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	The Wyckoff positional order and polyhedral intergrowth in the M3B2- and M5B3-type boride precipitated in the Ni-based superalloys
	X. B.; Zhu Hu, Y. L.; Sheng, N. C.; Ma, X. L.
	2014
发表期刊	Scientific Reports
ISSN	2045-2322
卷号	4
摘要	Ni-based single superalloys play a crucial role in the hottest parts of jet engines. However, due to the complex geometry and macro-segregation during the solidification process, the cast defect such as stray grains is inevitable. Therefore, the transient liquid phase (TLP) bonding which can join several small single crystalline castings together is gradually believed to be an effective method for improving the yields of production of the complex components. The melting point depressant element B is always added into the interlayer filler material. Consequently, borides including the M3B2 and M5B3 phase usually precipitate during the TLP bonding process. So a comprehensive knowledge of the fine structural characteristics of the borides is very critical for an accurate evaluation of the TLP bonding process. In this work, by means of the aberration-corrected transmission electron microscopy, we show, at an atomic scale, the Wyckoff positional order phenomenon of the metal atoms in the unit cell of M3B2- and M5B3-type boride. Meanwhile, the defect along the (001) plane of the above two types of boride are determined to be the polyhedral intergrowth with complex configurations.
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. [sheng, n. c.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. ; ma, xl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china. ; xlma@imr.ac.cn
关键词	Rotation Electron-diffraction Nickel-based Superalloys Microstructure Development Grain-boundaries Phase Evolution Gtd-111 Alloy Solidification Dislocations
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73822
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. B.,Zhu Hu, Y. L.,Sheng, N. C.,et al. The Wyckoff positional order and polyhedral intergrowth in the M3B2- and M5B3-type boride precipitated in the Ni-based superalloys[J]. Scientific Reports,2014,4.
APA	X. B.,Zhu Hu, Y. L.,Sheng, N. C.,&Ma, X. L..(2014).The Wyckoff positional order and polyhedral intergrowth in the M3B2- and M5B3-type boride precipitated in the Ni-based superalloys.Scientific Reports,4.
MLA	X. B.,et al."The Wyckoff positional order and polyhedral intergrowth in the M3B2- and M5B3-type boride precipitated in the Ni-based superalloys".Scientific Reports 4(2014).