Isothermal solidification stage during transient liquid-phase bonding single-crystal superalloys

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	Isothermal solidification stage during transient liquid-phase bonding single-crystal superalloys
	N. C. Sheng; J. D. Liu; T. Jin; X. F. Sun; Z. Q. Hu
	2014
发表期刊	Philosophical Magazine
ISSN	1478-6435
卷号	94 期号:11 页码:1219-1234
摘要	In this work, the isothermal solidification stage during transient liquid-phase bonding (TLP) single-crystal superalloys has been investigated. Experiments were performed to ascertain the bonding microstructures and the kinetics during the isothermal solidification. The results have shown that the isothermal solidification stage deviates from the standard parabolic TLP models. Lots of the borides with fine, short bar and acicular morphologies formed in the diffusion affected zone (DAZ) in the thick wall and thin wall substrate specimens at the isothermal solidification stage. Electron probe microanalysis results have shown that there exists B composition peak in the DAZ. Examination of the bonding kinetics presented that there are three stages in the isothermal solidification stage: initial stage, transient stage and final stage with different growth velocity of the isothermal solidification zone (ISZ). And the relationship of the width of the ISZ with the square root of the bonding time didn't satisfy the parabolic relationship. Based on the microstructures and kinetics observed, a film ISZ mechanism is proposed, and a model is constructed to illustrate the isothermal solidification stage during bonding single-crystal superalloys.
部门归属	[sheng, naicheng ; liu, jide ; jin, tao ; sun, xiaofeng ; hu, zhuangqi] chinese acad sci, superalloys div, inst met res, shenyang 110016, peoples r china. ; liu, jd (reprint author), chinese acad sci, superalloys div, inst met res, shenyang 110016, peoples r china. ; jdliu@imr.ac.cn
关键词	Single Crystal Superalloys Tlp Bonding Isothermal Solidification Inconel 738lc Superalloy Grain-boundaries Wide-gap Temperature Evolution Joints Nickel System Metal
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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/321006/72900
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	N. C. Sheng,J. D. Liu,T. Jin,et al. Isothermal solidification stage during transient liquid-phase bonding single-crystal superalloys[J]. Philosophical Magazine,2014,94(11):1219-1234.
APA	N. C. Sheng,J. D. Liu,T. Jin,X. F. Sun,&Z. Q. Hu.(2014).Isothermal solidification stage during transient liquid-phase bonding single-crystal superalloys.Philosophical Magazine,94(11),1219-1234.
MLA	N. C. Sheng,et al."Isothermal solidification stage during transient liquid-phase bonding single-crystal superalloys".Philosophical Magazine 94.11(2014):1219-1234.