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An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard alpha inclusions
Hu, Dianyin1,2; Pan, Jinchao3; Mao, Jianxing1,2; Guo, Xiaojun4; Ji, Haibin5; Wang, Rongqiao2,3
Corresponding AuthorMao, Jianxing(maojx@buaa.edu.cn)
2020-08-01
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume193Pages:10
AbstractFatigue life estimation on hard alpha inclusion induced failure in titanium alloy remains in long-term interest, due to the local stress distribution induced by the interaction between inclusion and surface as well as the scatter in randomly oriented grains. In this paper, an anisotropic mesoscale model is established to describe the fatigue failure of typical bi-phase titanium alloy with hard alpha inclusion. The stress-life criterion is formulated by dislocation stress field elaborated from anisotropic fracture mechanics, taking in random variables to represent the scatter in grain size and orientation. Parameters include microstructures characterized by microscope, dislocation slip properties evaluated by molecular dynamics (MD) simulation, and information of activated slip system via crystal plasticity finite element method (CPFEM) simulation. By using the data of specimens with and without inclusion, the proposed model exhibits excellent capability in fatigue life prediction for a wide range of stress ratio. This work draws insights on physics-based life prediction for inclusion induced fatigue failure. (c) 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
KeywordMultiscale modeling Fatigue failure Titanium alloy Duplex microstructure Hard alpha inclusion
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Aeronautics Power Foundation ; China Postdoctoral Science Foundation ; National Science and Technology Major Project
DOI10.1016/j.matdes.2020.108844
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51905020] ; Aeronautics Power Foundation[6141B09050378] ; China Postdoctoral Science Foundation[2019M650442] ; National Science and Technology Major Project[2017-IV-0004-0041]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000568761300004
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140556
Collection中国科学院金属研究所
Corresponding AuthorMao, Jianxing
Affiliation1.Beihang Univ, Aeroengine Res Inst, Beijing 100191, Peoples R China
2.Beijing Key Lab Aeroengine Struct & Strength, Beijing 100191, Peoples R China
3.Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China
4.China Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Hu, Dianyin,Pan, Jinchao,Mao, Jianxing,et al. An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard alpha inclusions[J]. MATERIALS & DESIGN,2020,193:10.
APA Hu, Dianyin,Pan, Jinchao,Mao, Jianxing,Guo, Xiaojun,Ji, Haibin,&Wang, Rongqiao.(2020).An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard alpha inclusions.MATERIALS & DESIGN,193,10.
MLA Hu, Dianyin,et al."An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard alpha inclusions".MATERIALS & DESIGN 193(2020):10.
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