Effect of high preheating on the microstructure and mechanical properties of high gamma prime Ni-based superalloy manufactured by laser powder bed fusion

doi:10.1016/j.jallcom.2023.170598

IMR OpenIR

	Effect of high preheating on the microstructure and mechanical properties of high gamma prime Ni-based superalloy manufactured by laser powder bed fusion
	Chen, Yixuan 1; Wang, Weihao 1; Ou, Yao 1; Li, Daiyun 1; Chang, Hai 1; Wu, Yingna 1; Yang, Rui 1,2; Zhai, Zirong 1; Li, Changpeng 3
通讯作者	Zhai, Zirong(zhaizr@shanghaitech.edu.cn)
	2023-10-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	960 页码:21
摘要	Laser powder bed fusion (L-PBF) is an additive manufacturing method with potential applications in the aerospace industry. Currently, IN738LC has been a challenging engineering material to work with as it is inherently brittle due to its high & gamma;& PRIME; volume fraction. In this study, crack-free IN738LC was manufactured on a customized L-PBF system capable of preheating to 700 & DEG;C. A wide processing parameter range (58-83 J/ mm3) could be selected to achieve solid bulk fabrication with a density of 99.95%. The microstructure and mechanical behavior difference between preheating at 200 & DEG;C and 700 & DEG;C were assessed. In addition to achieving cracking suppression, the high preheating temperature resulted in a strong textured columnar microstructure with finely dispersed carbide particles along the grain boundaries of as-built parts, and superior room temperature ultimate tensile strength of 1612 MPa associated with good ductility of 18% was achieved. Work hardening rate evolution that differed from 200 & DEG;C preheating was thought to cause abnormal anisotropic tensile behavior. The influence of preheating on the melt pool morphology, the development of fluid dynamics, and the thermal behavior were discussed according to simulations with the discrete element model (DEM) and volume of fluid (VOF) method. & COPY; 2023 Elsevier B.V. All rights reserved.
关键词	Laser powder bed fusion (L-PBF) IN738LC superalloy High preheating Texture Anisotropic tensile properties
资助者	Double First -Class Initiative fund ; Shanghai Tech University ; CAS Interdisciplinary Innovation Team Project
DOI	10.1016/j.jallcom.2023.170598
收录类别	SCI
语种	英语
资助项目	Double First -Class Initiative fund ; Shanghai Tech University ; CAS Interdisciplinary Innovation Team Project[JCTD-2020-10]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001013451800001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：10[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/321006/178331
专题	中国科学院金属研究所
通讯作者	Zhai, Zirong
作者单位	1.ShanghaiTech Univ, Ctr Adapt Syst Engn, 393 Huaxia Middle Rd, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Siemens Ltd China, Technol, Beijing 100102, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yixuan,Wang, Weihao,Ou, Yao,et al. Effect of high preheating on the microstructure and mechanical properties of high gamma prime Ni-based superalloy manufactured by laser powder bed fusion[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,960:21.
APA	Chen, Yixuan.,Wang, Weihao.,Ou, Yao.,Li, Daiyun.,Chang, Hai.,...&Li, Changpeng.(2023).Effect of high preheating on the microstructure and mechanical properties of high gamma prime Ni-based superalloy manufactured by laser powder bed fusion.JOURNAL OF ALLOYS AND COMPOUNDS,960,21.
MLA	Chen, Yixuan,et al."Effect of high preheating on the microstructure and mechanical properties of high gamma prime Ni-based superalloy manufactured by laser powder bed fusion".JOURNAL OF ALLOYS AND COMPOUNDS 960(2023):21.