Effects of Brazing Temperature on Microstructure and High-Temperature Strength of Joints Using a Novel Fourth-Generation Nickel-Based Single Crystal Superalloy

doi:10.1007/s12540-022-01223-7

IMR OpenIR

	Effects of Brazing Temperature on Microstructure and High-Temperature Strength of Joints Using a Novel Fourth-Generation Nickel-Based Single Crystal Superalloy
	Zhang, Z. P.1,2; Liu, J. D.2; Qiu, K. Q.1; Huang, Y. Y.2; Li, J. G.2; Wang, X. G.2; Liu, J. L.2; Wang, M.2; Zou, M. K.2; Zhou, Y. Z.2
通讯作者	Liu, J. D.(jdliu@imr.ac.cn) ; Qiu, K. Q.(kqqiu@sut.edu.cn)
	2022-06-03
发表期刊	METALS AND MATERIALS INTERNATIONAL
ISSN	1598-9623
页码	13
摘要	A novel fourth-generation nickel-based single crystal superalloy was bonded by vacuum brazing at 1230 degrees C, 1260 degrees C and 1290 degrees C for 60 min using a new type of Co-based filler alloy. The effects of the brazing temperature on the microstructure and mechanical properties of the brazed joint were investigated. The brazed joint was mainly composed of the non-isothermal solidification zone (M3B2 type-boride, CrB boride, Ni3B boride and MC carbide), isothermal solidification zone (gamma and gamma' Phase) and base metal. With the increase of brazing temperature, the volume fraction of borides and gamma' phase in the center of the joint decreased and increased, respectively. The high-temperature tensile test results show that the tensile strength of the joints was improved with increasing brazing temperature, and the maximum tensile strength of the joint was 766 MPa after brazing at 1290 degrees C for 60 min. Fracture observation shows that the fracture modes of the joints were the same, which belongs to the typical quasi cleavage fracture. The element distribution in the joint was homogenized to a certain extent at 1290 degrees C. The segregation of Si and Ru was found, but they were still dissolved in the gamma solid solution. The experimental results help to better understand the microstructure characteristics of the novel fourth-generation nickel-based single crystal superalloy and provide guidance for further optimizing the process parameters of the brazed joint.
关键词	Superalloy Vacuum brazing Co-based filler alloy Mechanical properties
资助者	National Natural Science Foundation of China ; National Key R&D Program of China ; National Science and Technology Major Project
DOI	10.1007/s12540-022-01223-7
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871221] ; National Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; National Science and Technology Major Project[J2019-VI-0023-0139] ; National Science and Technology Major Project[J2019-VII-0004-0144]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000805721700004
出版者	KOREAN INST METALS MATERIALS
引用统计	被引频次：6[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/321006/174255
专题	中国科学院金属研究所
通讯作者	Liu, J. D.; Qiu, K. Q.
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Z. P.,Liu, J. D.,Qiu, K. Q.,et al. Effects of Brazing Temperature on Microstructure and High-Temperature Strength of Joints Using a Novel Fourth-Generation Nickel-Based Single Crystal Superalloy[J]. METALS AND MATERIALS INTERNATIONAL,2022:13.
APA	Zhang, Z. P..,Liu, J. D..,Qiu, K. Q..,Huang, Y. Y..,Li, J. G..,...&Zhou, Y. Z..(2022).Effects of Brazing Temperature on Microstructure and High-Temperature Strength of Joints Using a Novel Fourth-Generation Nickel-Based Single Crystal Superalloy.METALS AND MATERIALS INTERNATIONAL,13.
MLA	Zhang, Z. P.,et al."Effects of Brazing Temperature on Microstructure and High-Temperature Strength of Joints Using a Novel Fourth-Generation Nickel-Based Single Crystal Superalloy".METALS AND MATERIALS INTERNATIONAL (2022):13.