Effect of adding Ce on the hot-tearing susceptibility of the 5TiB2/Al-5Cu composite

doi:10.1016/j.matchar.2020.110552

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Effect of adding Ce on the hot-tearing susceptibility of the 5TiB2/Al-5Cu composite
	Zhang, Xiaobo 1,3; Zhu, Peng 1,3; Zeng, Long 2; Feng, Baigang 1,3; Wan, Xiongbin 1,3; Ren, Junqiang 1,3
刊名	Materials Characterization
	2020-10-01
卷号	168
关键词	Aluminum alloys Copper alloys Grain boundaries Grain size and shape Liquid metals Microstructure Rare earths Solidification Ternary alloys Titanium compounds Average grain diameter Composite microstructures Hot tearing susceptibility Particle agglomerations Residual liquid metals Solidification defects Solidification temperature Uniform microstructure
ISSN号	10445803
DOI	10.1016/j.matchar.2020.110552
英文摘要	Hot tearing is a severe solidification defect that occurs during the metal solidification process. To reduce the hot-tearing susceptibility (HTS) of a 5TiB2/Al-5Cu composite, rare-earth Ce with mass fractions of 0.2%, 0.5%, and 1% was added to the composite in this study. The results indicated that the HTS of the composite decreased with the increase of Ce from 0.2% to 1%. The HTS value of the 5TiB2/Al-5Cu composite decreased from 15.61 to 5.60, and the solidification-temperature range of the composites gradually narrowed after the Ce addition. In addition, the grain size of the composite was refined, and the average grain diameter decreased from 26.29 μm to 18.97 μm. With the increase in Ce content, the composite microstructure was refined and the TiB2 particle agglomeration dissolved. As the Ce increased, the finer lamellar Al8Cu4Ce phase promoted a more uniform microstructure and a more fluid liquid metal. Therefore, the residual liquid metal better fed the cracks, and the grain-boundary phases formed more bridges to improve the high HTS of 5TiB2/Al-5Cu composites. © 2020 Elsevier Inc.
语种	英语
出版者	Elsevier Inc.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115482]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China 3.Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China;
推荐引用方式 GB/T 7714	Zhang, Xiaobo,Zhu, Peng,Zeng, Long,et al. Effect of adding Ce on the hot-tearing susceptibility of the 5TiB2/Al-5Cu composite[J]. Materials Characterization,2020,168.
APA	Zhang, Xiaobo,Zhu, Peng,Zeng, Long,Feng, Baigang,Wan, Xiongbin,&Ren, Junqiang.(2020).Effect of adding Ce on the hot-tearing susceptibility of the 5TiB2/Al-5Cu composite.Materials Characterization,168.
MLA	Zhang, Xiaobo,et al."Effect of adding Ce on the hot-tearing susceptibility of the 5TiB2/Al-5Cu composite".Materials Characterization 168(2020).