Crack initiation induced nanograins and facets of a titanium alloy with lamellar and equiaxed microstructure in very-high-cycle fatigue

doi:10.1016/j.matlet.2023.135769

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	Crack initiation induced nanograins and facets of a titanium alloy with lamellar and equiaxed microstructure in very-high-cycle fatigue
	Pan XN(潘向南); Xu, Shouwen; Nikitin, Alexander; Shanyavskiy, Andrey; PalinLuc, Thierry; Hong YS(洪友士)
刊名	MATERIALS LETTERS
	2024-02-15
卷号	357 页码:5
关键词	Titanium alloy Crack initiation Facet Nanograin Fatigue Microstructure
ISSN号	0167-577X
DOI	10.1016/j.matlet.2023.135769
通讯作者	Hong, Youshi(hongys@imech.ac.cn)
英文摘要	Fractographic and microstructure features in crack initiation region in very-high-cycle fatigue (VHCF) were characterized for an extruded titanium alloy VT3-1 under stress ratios R =-1 and 0.1. The material consists of lamellar and equiaxed microstructure. All specimens failed by internal crack initiation with rough area feature in VHCF. Within the rough area region, facets initiated from a big cluster of lamellar alpha at R = 0.1, and nanograin layers formed at some local areas underneath fracture surfaces due to insufficient contact of NCP (numerous cyclic pressing) process in the inhomogeneous microstructure at R =-1. Here, NCP mechanism still dominates the VHCF behavior of this titanium alloy under negative stress ratios, and facets dominate at R > 0.
分类号	二类
资助项目	National Natural science Foundation of China[11932020]
WOS研究方向	Materials Science ; Physics
语种	英语
WOS记录号	WOS:001143213200001
资助机构	National Natural science Foundation of China
其他责任者	Hong, Youshi
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94118]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Pan XN,Xu, Shouwen,Nikitin, Alexander,et al. Crack initiation induced nanograins and facets of a titanium alloy with lamellar and equiaxed microstructure in very-high-cycle fatigue[J]. MATERIALS LETTERS,2024,357:5.
APA	潘向南,Xu, Shouwen,Nikitin, Alexander,Shanyavskiy, Andrey,PalinLuc, Thierry,&洪友士.(2024).Crack initiation induced nanograins and facets of a titanium alloy with lamellar and equiaxed microstructure in very-high-cycle fatigue.MATERIALS LETTERS,357,5.
MLA	潘向南,et al."Crack initiation induced nanograins and facets of a titanium alloy with lamellar and equiaxed microstructure in very-high-cycle fatigue".MATERIALS LETTERS 357(2024):5.