Influence of γ′ precipitate on impact toughness and tensile properties of a new Fe-Ni-based superalloy

doi:10.1016/j.intermet.2024.108205

IMR OpenIR

	Influence of γ′ precipitate on impact toughness and tensile properties of a new Fe-Ni-based superalloy
	Huang, Yeshun 1,2; Zhang, Rui 1; Zhou, Zijian 1; Zhang, Peng 3; Yan, Jingbo 3; Yuan, Yong 3; Gu, Yuefeng 4; Cui, Chuanyong 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Cui, Chuanyong(chycui@imr.ac.cn)
	2024-03-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	166 页码:9
摘要	The mechanical properties, including room-temperature fracture toughness, microhardness and compressive strength at 1250 degrees C, and oxidation resistance at 1250 degrees C of Nb-Si based alloys with different Mo contents (0, 2, 5 and 10 at.% Mo additions) were systematically evaluated. The roles of Mo content additions in the relationships between these properties and microstructures in a multi-elemental system of Nb-Ti-Si-Cr-Al-V-Hf-Zr-Mo were revealed. The results show that the four alloys are all composed of primary gamma(Nb,X)(5)Si-3 blocks, three types of Nbss/gamma(Nb,X)(5)Si-3 eutectic and a small amount of Nbss/Cr2Nb eutectic. Alloying with Mo obviously decreases the amount and size of primary gamma(Nb,X)(5)Si-3 blocks, and correspondingly increases the concentration of Si in the remaining liquid during solidification, which results in preferable formation of regular eutectic. Both the microhardness of microstructural constituents at room temperature and the compressive strength at 1250 degrees C of the alloys are obviously improved due to the solid solution strengthening effect by Mo addition in the alloys. Adding 2 at.% Mo in the alloys simultaneously ameliorates the room-temperature fracture toughness as well as the oxidation resistance at 1250 degrees C of the alloys, while the additions of 5 and 10 at.% Mo in the alloys deteriorate them. Moreover, the adhesion of oxide scales is significantly improved by alloying with Mo.
关键词	Fe-Ni-based superalloy gamma ' precipitate Impact toughness Tensile behavior
资助者	National Key R & D Program of China ; Research and Development Funds of Xi'an Thermal Power Research Institute Co., Ltd. ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Natural Science Basic Research Plan in Shaanxi Province of China
DOI	10.1016/j.intermet.2024.108205
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2019YFA0705300] ; National Key R & D Program of China[2021YFB3700600] ; Research and Development Funds of Xi'an Thermal Power Research Institute Co., Ltd.[TA-20-TYK03] ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences[2021-PY09] ; National Natural Science Foundation of China[92060102] ; Natural Science Basic Research Plan in Shaanxi Province of China[2022JQ-314]
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:001176512700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：3[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/321006/184639
专题	中国科学院金属研究所
通讯作者	Cui, Chuanyong
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China 4.Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yeshun,Zhang, Rui,Zhou, Zijian,等. Influence of γ′ precipitate on impact toughness and tensile properties of a new Fe-Ni-based superalloy[J]. INTERMETALLICS,2024,166:9.
APA	Huang, Yeshun.,Zhang, Rui.,Zhou, Zijian.,Zhang, Peng.,Yan, Jingbo.,...&Sun, Xiaofeng.(2024).Influence of γ′ precipitate on impact toughness and tensile properties of a new Fe-Ni-based superalloy.INTERMETALLICS,166,9.
MLA	Huang, Yeshun,et al."Influence of γ′ precipitate on impact toughness and tensile properties of a new Fe-Ni-based superalloy".INTERMETALLICS 166(2024):9.