Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes

doi:10.1016/j.jmrt.2024.12.137

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	Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes
	Xia, Yelin 1; Wu, Haoran 1; Liu, Keyi 2; Lei, Jianbo 3; Hu, Yabao 1; Chen, Hanning 1; Zheng, Chen 4,5
	2025-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	34 页码:1045-1056
摘要	Heat treatment can enhance the microstructure uniformity and mitigate element segregation in the nickel-based superalloy GH3536 fabricated via laser directional energy deposition, augmenting its mechanical and corrosion properties. This study used laser beam oscillation to deposit GH3536 specimens and designed three heat treatment regimens: solution treatment (1177 degrees C/1 h), aging treatment (720 degrees C/8 h), and solution + aging treatment (1177 degrees C/1 h + 720 degrees C/8 h). The regulatory mechanisms of the treatments on the microstructure, tensile fracture, and corrosion behavior of the alloy were investigated. After solid solution treatment, the microstructure was completely recrystallized, and the long striped Laves phase was dissolved and transformed into granules; After aging treatment, a large amount of carbides precipitated at the grain boundaries. After solution treatment, the microstructure was completely recrystallized, and the striped Laves phase is dissolved and transformed into granules, improving the solid-solution strengthening effect of the GH3536 alloy; After aging treatment, a large amount of carbides precipitate at the grain boundaries, which enhanced the strength of the GH3536 alloy through the pinning effect and weakened the toughness. After solid solution and aging treatment, the tensile strength of GH3536 alloy increased to 840 MPa, and the elongation exceeded 39%, which were 22.90% and 9.7% higher than that of the as-deposited GH3536 alloy, respectively; During electrochemical corrosion, solid solution treatment and solution + aging treatment lead to more uniform microstructure, facilitating the formation of denser passivation films and enhancing corrosion resistance. After aging treatment, dendritic microstructures and precipitates are prone to induce potential differences, undermining the corrosion resistance.
关键词	Laser directional energy deposition Nickel-based superalloy Heat-treatment Tensile mechanical property Electrochemical corrosion
其他关键词	INCONEL 718 ; MICROSTRUCTURE ; RESISTANCE ; ALLOY
DOI	10.1016/j.jmrt.2024.12.137
收录类别	SCIE
语种	英语
资助项目	China Postdoctoral Science Foun-dation [2024M752384]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001392948300001
出版者	ELSEVIER
原始文献类型	Article
EISSN	2214-0697
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/174296
专题	国家开放大学
通讯作者	Lei, Jianbo; Hu, Yabao; Chen, Hanning
作者单位	1.Tianjin Univ Sci & Technol, Coll Artificial Intelligence, Tianjin 300457, Peoples R China; 2.Xinjiang Inst Engn, Sch Mech & Elect Engn, Urumqi 830023, Peoples R China; 3.Tiangong Univ, Laser Technol Inst, Tianjin 300387, Peoples R China; 4.Open Univ China, Beijing 100039, Peoples R China; 5.Minist Educ, Engn Res Ctr Integrat & Applicat Digital Learning, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Xia, Yelin,Wu, Haoran,Liu, Keyi,et al. Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2025,34:1045-1056.
APA	Xia, Yelin.,Wu, Haoran.,Liu, Keyi.,Lei, Jianbo.,Hu, Yabao.,...&Zheng, Chen.(2025).Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,34,1045-1056.
MLA	Xia, Yelin,et al."Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 34(2025):1045-1056.