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Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy
Yang, Chenglin3,4; Zhao, Qinglong1,2; Zhang, Zhenjun3; Li, Linlin3,5; Tian, Weisi1,2; Liu, Rui3; Zhang, Peng3; Xu, Yijiang6; Li, Yanjun6; Zhang, Zhefeng3,4; Jiang, Qichuan1,2; Ritchie, Robert O.7
Corresponding AuthorZhang, Zhenjun(zjzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) ; Jiang, Qichuan(jqc@jlu.edu.cn)
2020-01-15
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume186Pages:8
AbstractFatigue resistance and fracture toughness are essential to the reliability of castings during service. Reducing microporosity in cast alloys is a crucial issue for improving their fatigue strength and fracture toughness. Here we report a significant reduction inmicroporosity of a cast aluminum-copper alloy developed using in situ TiC nanoparticle additions coupled with a stir-casting method. The addition of TiC nanoparticles is found to improve the interdendritic feedability of liquidmetal and as a result reduces the volume fraction of microporosity by two orders of magnitude compared to a conventionally cast Al-Cu alloy. This method, which is mechanistically associated with a pore-dominated process, acts to significantly improve the fatigue strength, fracture toughness and uniform elongation of the cast Al-Cu alloy to values which, to the best of our knowledge, represent the highest ever achieved for a cast aluminum alloy. (c) 2019 The Authors. 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/).
KeywordCast Al alloys Fatigue strength Fracture toughness Nanoparticles
Funding OrganizationNational Natural Science Foundation of China (NSFC)
DOI10.1016/j.matdes.2019.108221
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51790483] ; National Natural Science Foundation of China (NSFC)[51790482] ; National Natural Science Foundation of China (NSFC)[51871223] ; National Natural Science Foundation of China (NSFC)[51330007]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000505221700067
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136339
Collection中国科学院金属研究所
Corresponding AuthorZhang, Zhenjun; Zhang, Zhefeng; Jiang, Qichuan
Affiliation1.Jilin Univ, Minist Educ, Key Lab Automobile Mat, 5988 Renmin St, Changchun 130025, Peoples R China
2.Jilin Univ, Sch Mat Sci & Engn, 5988 Renmin St, Changchun 130025, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
5.Max Planck Str 1, D-40237 Dusseldorf, Germany
6.Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway
7.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Yang, Chenglin,Zhao, Qinglong,Zhang, Zhenjun,et al. Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy[J]. MATERIALS & DESIGN,2020,186:8.
APA Yang, Chenglin.,Zhao, Qinglong.,Zhang, Zhenjun.,Li, Linlin.,Tian, Weisi.,...&Ritchie, Robert O..(2020).Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy.MATERIALS & DESIGN,186,8.
MLA Yang, Chenglin,et al."Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy".MATERIALS & DESIGN 186(2020):8.
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