Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing

doi:10.1016/S1003-6326(23)66170-9

IMR OpenIR

	Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing
	Wu, Bin 1,2; Liang, Jing-jing 1,3; Zhou, Yi-zhou 1; Yang, Yan-hong 1,3; LI, Jin-guo 1,3; Sun, Xiao-feng 1
通讯作者	Liang, Jing-jing(jjliang@imr.ac.cn) ; Zhou, Yi-zhou(yzzhou@imr.ac.cn)
	2023-04-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	33 期号:4 页码:1124-1143
摘要	The microstructure and tensile properties of a new Ni-based superalloy specially designed for additive manufacture (AM) were investigated under different laser power (LP) conditions. The results measured by X-ray diffraction analysis and scanning electron microscopy show that no cracks are observed in as-deposited alloy, which has typical crystallography orientation and non-equilibrium solidification dendrite/cellular morphology. The elements such as Nb, Si and Ti are enriched in the interdendritic regions, while Al, Cr and Co segregate in the dendritic cores. When the LP is low, the cellular crystals of the alloy are arranged orderly, the primary dendrite arm space (PDAS) is small, the porosity is large, the strength is high and the elongation is low. With the increase of LP, the PDAS increases, the porosity decreases, the strength decreases and the elongation increases. When the LP is elevated further, Marangoni convection effect is enhanced and shows unique impacts, that is, the disordered arrangement of cellular crystals occurs. Then, the PDAS decreases, the porosity increases, the strength increases and the elongation decreases. The smaller PDAS favors the reduction for elements segregation, as well as microstructure refinement and strength improvement. The fitting formula between PDAS and yield strength (YS) was proposed, and the concentric ring patterns inside microstructure were rationalized.
关键词	Marangoni convection molten pool laser power (LP) primary dendrite arm space (PDAS) segregation
资助者	National Science and Technology Major Project, China ; National Natural Science Foundation of China
DOI	10.1016/S1003-6326(23)66170-9
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project, China[Y2019 -VII -0011-0151] ; National Natural Science Foundation of China[51771190]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001004292300001
出版者	ELSEVIER
引用统计	被引频次：7[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/321006/178286
专题	中国科学院金属研究所
通讯作者	Liang, Jing-jing; Zhou, Yi-zhou
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Key Lab Space Mfg Technol, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Wu, Bin,Liang, Jing-jing,Zhou, Yi-zhou,et al. Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2023,33(4):1124-1143.
APA	Wu, Bin,Liang, Jing-jing,Zhou, Yi-zhou,Yang, Yan-hong,LI, Jin-guo,&Sun, Xiao-feng.(2023).Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,33(4),1124-1143.
MLA	Wu, Bin,et al."Influence of laser power on microstructure and tensile property of a new nickel-based superalloy designed for additive manufacturing".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 33.4(2023):1124-1143.