Influence of pulsed laser scanning patterns on microstructural evolution and mechanical properties of Inconel 718 in direct laser deposition

doi:10.1016/j.jmrt.2023.06.012

IMR OpenIR

	Influence of pulsed laser scanning patterns on microstructural evolution and mechanical properties of Inconel 718 in direct laser deposition
	Ma, Liang 1,2; Kong, Xiangwei 1; Liang, Jingjing 2; Li, Jinguo 2; Feng, He 3; Ci, Shiwei 4; Zhang, Xue 2; Sun, Cong 1; Jin, Zhibo 1
通讯作者	Kong, Xiangwei(xwkong@me.neu.edu.cn) ; Liang, Jingjing(jjliang@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn)
	2023-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	25 页码:1231-1244
摘要	The mechanical properties of direct laser deposition (DLD) parts are crucial for engineering applications, which are determined by the microstructure and texture. To achieve fine microstructure and higher mechanical performance, pulsed laser deposition is used to generate less heat accumulation and a higher cooling rate. However, the relationship between microstructure and thermal history is difficult to investigate due to the transient temperature change. In this work, a three-dimensional numerical model is developed to study the thermal behavior of the molten pool in the continuous laser deposition (CLD), the continuous pulsed laser deposition (CPLD), and the interval pulsed laser deposition (IPLD) processes. The microstructure of the deposition samples is investigated by optical microscope and electron back-scattered diffraction. The mechanical response of the deposition samples is investigated by tensile test and microhardness test. Compared with the CLD, CPLD, and IPLD result in higher temperature gradient and cooling rate, long columnar grains, and a strong fiber texture. However, grains with larger sizes and a texture with a herringbone pattern due to the change of heat flow are obtained in CLD samples. The test values of IPLD samples show higher tensile strength, higher yield strength, lower ductility, and higher hardness values. This research brings about a perspective for studying the thermal effects of deposition layers and a novelty deposition process to obtain specific microstructures and better mechanical properties.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Direct laser deposition Pulsed laser Numerical model Heat transfer Microstructure Crystallographic texture
资助者	National Science and Technology Major Project ; National Key Research and Development Program of China ; State Ministry of Science and Technology Innovation Fund of China
DOI	10.1016/j.jmrt.2023.06.012
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2019-VII-0019-0161] ; National Key Research and Development Program of China[SQ2019YFB1704500] ; State Ministry of Science and Technology Innovation Fund of China[2018IM030200]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001089761500001
出版者	ELSEVIER
引用统计	被引频次：4[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/321006/177836
专题	中国科学院金属研究所
通讯作者	Kong, Xiangwei; Liang, Jingjing; Li, Jinguo
作者单位	1.Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Shenyang Aircraft Corp, Shenyang 110850, Peoples R China 4.State owned Wuhu Machinery Factory, Anhui Lab Aeronaut Equipment Measurement Control &, Wuhu 241007, Peoples R China
推荐引用方式 GB/T 7714	Ma, Liang,Kong, Xiangwei,Liang, Jingjing,et al. Influence of pulsed laser scanning patterns on microstructural evolution and mechanical properties of Inconel 718 in direct laser deposition[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,25:1231-1244.
APA	Ma, Liang.,Kong, Xiangwei.,Liang, Jingjing.,Li, Jinguo.,Feng, He.,...&Jin, Zhibo.(2023).Influence of pulsed laser scanning patterns on microstructural evolution and mechanical properties of Inconel 718 in direct laser deposition.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,25,1231-1244.
MLA	Ma, Liang,et al."Influence of pulsed laser scanning patterns on microstructural evolution and mechanical properties of Inconel 718 in direct laser deposition".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 25(2023):1231-1244.