Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria

doi:10.1016/j.actamat.2024.119658

IMR OpenIR

	Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria
	Yu, Hao 1; Fu, Jiabo 1; Wang, Chenchong 1; Chen, Yinping 1; Wang, Lingyu 1; Fang, Haixing 2,3,4; Li, Jinguo 5; van der Zwaag, Sybrand 6; Xu, Wei 1
通讯作者	Xu, Wei(xuwei@ral.neu.edu.cn)
	2024-03-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	266 页码:15
摘要	To achieve an effective design of additively manufacturable Ni superalloys with decent service performance, a hybrid computational design model has been developed, where the strategy to tailor local elemental segregations was integrated within a scheme of minimizing the cracking susceptibility. More specifically, the phase boundary of primary NbC / gamma matrix was introduced into the design routine to tune the spatial distribution of critical solutes at an atomic scale, thereby inhibiting the formation of borides and segregation-induced cracking. Based on the output of the design, new grades of Ni superalloy have been developed with excellent additive manufacturability, as confirmed by the robustness of printing parameters in fabricating low-defect-density samples. The capability of the phase boundaries to evenly distribute boron atoms was validated experimentally, and the cracking induced by uncontrolled boron segregation at grain boundaries was effectively prevented. The newly designed alloys showed good tensile properties and decent oxidation resistance at different service temperatures, which are comparable to those of conventionally produced superalloys. The finding that phase boundaries can be employed to prevent undesirable clustering of boron atoms can be extended to manipulate the distributions of other critical elements, which provides a new path for designing novel Ni superalloys with balanced printability and mechanical properties.
关键词	Additive manufacturability Boron segregation Computational design Phase boundaries Ni superalloys
资助者	National Key Research and Development Program ; National Natural Science Foundation of China
DOI	10.1016/j.actamat.2024.119658
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program[2021YFB3702500] ; National Natural Science Foundation of China[52204383]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001165142000001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：19[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/321006/184246
专题	中国科学院金属研究所
通讯作者	Xu, Wei
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 2.European Synchrotron Radiat Facil, 71 Ave Martyrs, F-380000 Grenoble, France 3.Univ Grenoble Alpes, Grenoble INP, CNRS SIMaP, 1130 Rue Piscine, F-38402 Saint Martin Dheres, France 4.Univ Lyon, CNRS, INSA Lyon, CETHIL,MATEIS, F-69621 Villeurbanne, France 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 6.Delft Univ Technol, Fac Aerosp Engn, Novel Aerosp Mat Grp, NL-2629 HS Delft, Netherlands
推荐引用方式 GB/T 7714	Yu, Hao,Fu, Jiabo,Wang, Chenchong,et al. Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria[J]. ACTA MATERIALIA,2024,266:15.
APA	Yu, Hao.,Fu, Jiabo.,Wang, Chenchong.,Chen, Yinping.,Wang, Lingyu.,...&Xu, Wei.(2024).Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria.ACTA MATERIALIA,266,15.
MLA	Yu, Hao,et al."Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria".ACTA MATERIALIA 266(2024):15.