Enhancement of creep properties with trace nitrogen in a low-cost nickel-based single crystal superalloy

doi:10.1016/j.msea.2024.147420

IMR OpenIR

	Enhancement of creep properties with trace nitrogen in a low-cost nickel-based single crystal superalloy
	Zhang, G. Q.1,2; Wang, L.1; Pang, Y. Y.1; Meng, J.1; Zhou, Y. Z.1; Sun, X. F.1
通讯作者	Meng, J.(jmeng@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn)
	2024-12-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	918 页码:13
摘要	Nitrogen (N) is an unavoidable element in single-crystal superalloys that combines with other elements to form nitrides. Large-size nitrides often become the sites of crack initiation and propagation, which adversely affect the microstructures and mechanical properties of superalloys. However, in this study, it was found that the addition of trace amounts of N could improve the creep properties of superalloys. The results indicated that the size and number of nitrides gradually increased as the N contents increased from 3 ppm to 25 ppm. In addition, the porosity first decreased and then increased. The cause of the increase and subsequent decrease in creep lives as N contents increased was the lattice expansion caused by the formation of nitrides, which reduced the porosity by compensating for volume contraction. Meanwhile, the small-size nitrides could impede dislocation movement, which benefited the creep life of the specimens, resulting in the best creep life of the specimens containing 12 ppm of N.
关键词	Nitrogen content Nitride Single-crystal superalloy Creep property Micropore
资助者	National Key R & D Program of China
DOI	10.1016/j.msea.2024.147420
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2019YFA0705300]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001345790600001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191132
专题	中国科学院金属研究所
通讯作者	Meng, J.; Zhou, Y. Z.
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
推荐引用方式 GB/T 7714	Zhang, G. Q.,Wang, L.,Pang, Y. Y.,et al. Enhancement of creep properties with trace nitrogen in a low-cost nickel-based single crystal superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,918:13.
APA	Zhang, G. Q.,Wang, L.,Pang, Y. Y.,Meng, J.,Zhou, Y. Z.,&Sun, X. F..(2024).Enhancement of creep properties with trace nitrogen in a low-cost nickel-based single crystal superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,918,13.
MLA	Zhang, G. Q.,et al."Enhancement of creep properties with trace nitrogen in a low-cost nickel-based single crystal superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 918(2024):13.