Effect of post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded gamma '-strengthened co-based single crystal superalloy

doi:10.1016/j.jmst.2020.05.078

IMR OpenIR

	Effect of post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded gamma '-strengthened co-based single crystal superalloy
	Wang, S. Y.1,2; Sun, Y.1; Cui, C. Y.1; Sun, X. F.1; Zhou, Y. Z.1; Ma, Y. M.3; An, H. L.3
通讯作者	Sun, Y.(yuansun@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn)
	2021-07-30
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	80 页码:244-258
摘要	Post-bond heat treatment (PBHT) applied to a transient liquid phase (TLP) bonding joint is an effective approach to remove the brittle borides and improve its properties. Herein, we proposed two types of PBHT strategies to obtain a TLP bonded gamma '-strengthened Co-based single crystal superalloy, and the microstructural characteristics and tensile properties of the two heat treated joints were compared to identify the optimal PBHT strategy. The evolution of the brittle boride in the joint after the PBHT was studied by using in-situ microscopy. The experimental results allowed to provide a theoretic model to quantitatively evaluate the distribution of the brittle phase after the optimal PBHT and analyze the joint fractures to understand the failure mechanisms. The obtained results revealed that a post-bond solid solution treatment performed to the joint at a high temperature (over 1275 degrees C) could decrease the area fraction of the boride from 7.2 % to 1.4 % and increase the elongation from 1.9 % to 7.8 %. This work emphasizes the relevance of solid solution temperature when a PBHT strategy is applied. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Transient liquid phase (TLP) gamma '-strengthened co-based single crystal superalloy Heat treatment sequence Brittle boride Tensile property
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Aerospace Power Foundation
DOI	10.1016/j.jmst.2020.05.078
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51771191] ; National Key Research and Development Program of China[2017YFA0700704] ; Aerospace Power Foundation[DLJJ1825]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000656122300022
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：19[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/321006/160890
专题	中国科学院金属研究所
通讯作者	Sun, Y.; Zhou, Y. Z.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.China Acad Machinery Sci & Technol, Harbin Welding Inst, Harbin 150028, Peoples R China
推荐引用方式 GB/T 7714	Wang, S. Y.,Sun, Y.,Cui, C. Y.,et al. Effect of post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded gamma '-strengthened co-based single crystal superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,80:244-258.
APA	Wang, S. Y..,Sun, Y..,Cui, C. Y..,Sun, X. F..,Zhou, Y. Z..,...&An, H. L..(2021).Effect of post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded gamma '-strengthened co-based single crystal superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,80,244-258.
MLA	Wang, S. Y.,et al."Effect of post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded gamma '-strengthened co-based single crystal superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 80(2021):244-258.