Microstructures and Mechanical Behaviors of Ni-Based Single-Crystal Superalloy DD90 Joints Brazed with a Co-Based Interlayer

doi:10.1007/s11665-024-09201-3

IMR OpenIR

	Microstructures and Mechanical Behaviors of Ni-Based Single-Crystal Superalloy DD90 Joints Brazed with a Co-Based Interlayer
	Gao, F.1,2; Liu, J. D.1; Zhu, C. W.1; Mei, H.3; Zhang, Z. P.4; Liu, J. L.1; Du, X. M.2; Li, J. G.1
通讯作者	Gao, F.(jdliu@imr.ac.cn)
	2024-03-15
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	13
摘要	A third-generation nickel-based single-crystal superalloy, DD90, was brazed with a Co-based filler alloy under vacuum conditions. The microstructural evolution of the joints brazed with different processing parameters and their effects on the mechanical properties were studied. Many brittle compound phases were formed in the non-isothermal solidification zone, mainly consisting of M3B2 and CrB. With increased bonding temperatures, the isothermal solidification zone increased in thickness and became a continuous region with the filler alloy zone (FAZ). With increasing bonding time, the alloying elements sufficiently diffused into the base metal, and the sizes of the compounds in the joint decreased. In addition, the Re contents of the M3B2 and CrB phases were relatively high compared to those of the gamma and gamma ' phases, and Re exhibited a special diffusion mechanism and influenced the evolution in the joint microstructures. High-temperature creep rupture tests of the joints were carried out at 980 degrees C/75 MPa. These joints fractured in the FAZ via typical quasicleavage fracture. The cracks initiated and propagated along the brittle compounds in the FAZ, and finally, the cracks connected with each other, leading to fracture. The numbers, sizes and distribution characteristics of the compounds in the joint had a significant effect on the creep rupture life of the joint.
关键词	Co-based filler alloy mechanical properties microstructure Ni-based single-crystal superalloy
资助者	National Key Research and Development Program of China ; National Science and Technology Major Project ; National Natural Science Foundation of China ; National Key R&D Program of China
DOI	10.1007/s11665-024-09201-3
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; National Science and Technology Major Project[J2019-VI-0023-0139] ; National Science and Technology Major Project[J2019-VII-0004-0144] ; National Natural Science Foundation of China[51871221] ; National Key R&D Program of China[2020YFA0714900]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001183952300005
出版者	SPRINGER
引用统计	被引频次：1[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/321006/184903
专题	中国科学院金属研究所
通讯作者	Gao, F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Shenyang 110159, Peoples R China 3.Shenyang Liming Aeroengine Grp Corp Ltd, Shenyang 110043, Peoples R China 4.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, MOE, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Gao, F.,Liu, J. D.,Zhu, C. W.,et al. Microstructures and Mechanical Behaviors of Ni-Based Single-Crystal Superalloy DD90 Joints Brazed with a Co-Based Interlayer[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2024:13.
APA	Gao, F..,Liu, J. D..,Zhu, C. W..,Mei, H..,Zhang, Z. P..,...&Li, J. G..(2024).Microstructures and Mechanical Behaviors of Ni-Based Single-Crystal Superalloy DD90 Joints Brazed with a Co-Based Interlayer.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,13.
MLA	Gao, F.,et al."Microstructures and Mechanical Behaviors of Ni-Based Single-Crystal Superalloy DD90 Joints Brazed with a Co-Based Interlayer".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2024):13.