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; Zhao, Qinglong; Zhang, Zhenjun; Li, Linlin; Tian, Weisi; Liu, Rui; Zhang, Peng; Xu, Yijiang; Li, Yanjun; Zhang, Zhefeng; Jiang, Qichuan; Ritchie, Robert O.
	2020-01-15
Source Publication	MATERIALS & DESIGN
Volume	186
Abstract	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/).
DOI	10.1016/j.matdes.2019.108221
WOS ID	WOS:000505221700067
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/83217
Collection	中国科学院金属研究所
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.
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.
MLA	Yang, Chenglin,et al."Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy".MATERIALS & DESIGN 186(2020).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院金属研究所机构知识库