Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition

doi:10.1016/j.jallcom.2023.171371

IMR OpenIR

	Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition
	Wang, Peng 1,2; Song, Wei 1,2; Yang, Shulin 3; Yang, Junying 1,2; Liang, Jingjing 1; Li, Jinguo 1; Yang, Zhiqing 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Liang, Jingjing(jjliang@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn)
	2023-11-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	965 页码:15
摘要	Four groups of newly developed Ni-based superalloy samples with different Zr contents were manufactured by Direct energy deposition (DED). This study focuses on the influence of Zr element concentration on microstructure and cracking formation mechanism in DED-processed Ni-based superalloy ZGH451. Although Zr content is low, it strongly affects the formation of the precipitated phase and hot tearing tendency. Measurement of the crack area showed that the crack density value increases with the Zr concentration. According to thermodynamic simulation results and microstructures observed, Zr microsegregation in the interdendritic regions and considerable amounts of Zr is present in oxides or carbides. Zr contributes to forming large-size carbides mainly due to zirconia providing nucleation sites and the dissolution of Zr. Simultaneously, the solidification has been retarded due to the continuous accumulation of large Zr atoms, which increases the & gamma;-& gamma;& PRIME; eutectic fraction. Moreover, Zr addition could effectively decrease the solidus temperature of ZGH451 alloys, leading to the critical liquid film at the end of solidification. Based on these results, staying below 0.05 wt% of Zr content to reduce the risk of hot tearing in additive manufacturing superalloy was proposed.
关键词	Ni -based superalloy Direct energy deposition Zirconium Hot cracking
资助者	National Key Ramp;D Program of China ; Science Center for Gas Turbine Project ; National Science and Technology Major Project
DOI	10.1016/j.jallcom.2023.171371
收录类别	SCI
语种	英语
资助项目	National Key Ramp;D Program of China[2021YFB3702503] ; Science Center for Gas Turbine Project[P2022-C-IV-002-001] ; National Science and Technology Major Project[Y2019-VII-0011-0151]
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:001049460900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：2[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/321006/178937
专题	中国科学院金属研究所
通讯作者	Liang, Jingjing; Li, Jinguo
作者单位	1.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.AECC Shenyang Liming Aeroengine Corp Ltd, Shenyang 110043, Peoples R China
推荐引用方式 GB/T 7714	Wang, Peng,Song, Wei,Yang, Shulin,et al. Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,965:15.
APA	Wang, Peng.,Song, Wei.,Yang, Shulin.,Yang, Junying.,Liang, Jingjing.,...&Sun, Xiaofeng.(2023).Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition.JOURNAL OF ALLOYS AND COMPOUNDS,965,15.
MLA	Wang, Peng,et al."Effect of Zr on microstructure and hot cracking susceptibility of ZGH451 superalloy fabricated by direct energy deposition".JOURNAL OF ALLOYS AND COMPOUNDS 965(2023):15.