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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
Corresponding AuthorSun, Y.(yuansun@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn)
2021-07-30
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume80Pages:244-258
AbstractPost-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.
KeywordTransient liquid phase (TLP) gamma '-strengthened co-based single crystal superalloy Heat treatment sequence Brittle boride Tensile property
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Aerospace Power Foundation
DOI10.1016/j.jmst.2020.05.078
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771191] ; National Key Research and Development Program of China[2017YFA0700704] ; Aerospace Power Foundation[DLJJ1825]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000656122300022
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160890
Collection中国科学院金属研究所
Corresponding AuthorSun, Y.; Zhou, Y. Z.
Affiliation1.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
Recommended Citation
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.
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