Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy

doi:10.1016/j.matdes.2019.108221

IMR OpenIR

	Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy
	Yang, Chenglin 3,4; Zhao, Qinglong 1,2; Zhang, Zhenjun 3; Li, Linlin 3,5; Tian, Weisi 1,2; Liu, Rui 3; Zhang, Peng 3; Xu, Yijiang 6; Li, Yanjun 6; Zhang, Zhefeng 3,4; Jiang, Qichuan 1,2; Ritchie, Robert O.7
通讯作者	Zhang, Zhenjun(zjzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) ; Jiang, Qichuan(jqc@jlu.edu.cn)
	2020-01-15
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	186 页码:8
摘要	Fatigue 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/).
关键词	Cast Al alloys Fatigue strength Fracture toughness Nanoparticles
资助者	National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.matdes.2019.108221
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000505221700067
出版者	ELSEVIER SCI LTD
引用统计	被引频次：24[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/321006/136339
专题	中国科学院金属研究所
通讯作者	Zhang, Zhenjun; Zhang, Zhefeng; Jiang, Qichuan
作者单位	1.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
推荐引用方式 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.