Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition

doi:10.1016/j.msea.2021.141601

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition
	Luo, Y. W.1; Ma, T.1; Shao, W. W.1; Zhang, G. P.2; Zhang, B.1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-07-21
卷号	821 页码:11
关键词	Laser melting deposition Functionally graded material Nickel-based superalloy Tensile properties Creep life
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.141601
通讯作者	Zhang, G. P.(gpzhang@imr.ac.cn) ; Zhang, B.(zhangb@atm.neu.edu.cn)
英文摘要	Blade-Integrated Disk is a perspective one-piece design strategy of turbine engine components with high efficiency of air compression. In this work, a functionally graded material composed of GH4169 and K418 is processed by laser melting deposition technique, followed by suitable heat treatment to optimize the microstructures and mechanical properties. Microstructure characterization, tensile and small punch creep tests of the functionally graded GH4169/K418 specimens were conducted. It is found that the as-built functionally graded material exhibits the continuous microstructure and the gradual composition transition region without sharp interfaces and hot cracks. The tensile yield strength, ultimate strength and elongation of the graded specimens at fracture achieved 726 MPa, 1044 MPa and 13.2%, respectively after the specimens were heat-treated through homogenization at 1100 degrees C for 1.5 h, solution treatment at 980 degrees C for 1 h and standard double aging. The creep life of the GH4169/K418 graded specimens at 650 degrees C and 850 N was mainly affected by the microstructure formed at different build heights of the as-built and heat-treated specimens. The relationship between the microstructures and tensile as well as creep properties of the graded specimens is elucidated.
资助项目	National Natural Science Foundation of China (NSFC)[51771207] ; National Key R&D Program of China[2017YFB0305800] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000672446200003
资助机构	National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; Fundamental Research Project of Shenyang National Laboratory for Materials Science
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160076]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, G. P.; Zhang, B.
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Luo, Y. W.,Ma, T.,Shao, W. W.,et al. Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,821:11.
APA	Luo, Y. W.,Ma, T.,Shao, W. W.,Zhang, G. P.,&Zhang, B..(2021).Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,821,11.
MLA	Luo, Y. W.,et al."Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 821(2021):11.