Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy

doi:10.3390/ma15020600

CORC > 金属研究所 > 中国科学院金属研究所

	Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy
	Zhang, Lili 2; Song, Yan 1,2; Yang, Linjie 1,2; Zhao, Jiuzhou 1,2; He, Jie 1,2; Jiang, Hongxiang 1,2
刊名	MATERIALS
	2022
卷号	15 期号:2 页码:9
关键词	grain refinement microstructure segregation heterogeneous nucleation metals and alloys
DOI	10.3390/ma15020600
通讯作者	Zhang, Lili(llzhang@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn)
英文摘要	Synergistic effect of TiB2 (in form of Al-5Ti-1B) and La on grain refining results in Al-2Cu alloy was investigated. alpha-Al grains are significantly refined by Al-5Ti-1B. When trace La is added to the melt, further refinement is exhibited. Average grain size and nucleation undercooling of alpha-Al reduce first and then almost remain unchanged with La addition. Satisfactory grain refining result achieves when La addition level reaches 600 ppm. When more than 600 ppm La is added to the melt, La-rich particles form and the effect of solute La left in matrix on the microstructure almost no longer changes. Theoretical calculation results demonstrate that solute La segregates to Al melt/TiB2 particles interface along with Ti and Cu prior to alpha-Al nucleation and the synergistic effect of La and TiB2 particles on grain refinement mainly attributes to the enhancement in the potency of TiB2 particles to heterogeneously nucleate alpha-Al by trace La addition.
资助项目	National Natural Science Foundation of China[51901231] ; National Natural Science Foundation of China[51971227] ; National Key R&D Program of China[2021YFA0716303] ; Natural Science Foundation of Liaoning Province[2019-BS-253]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000757059300001
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China ; Natural Science Foundation of Liaoning Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173474]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Lili; Zhao, Jiuzhou
作者单位	1.Univ Sci Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Lili,Song, Yan,Yang, Linjie,et al. Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy[J]. MATERIALS,2022,15(2):9.
APA	Zhang, Lili,Song, Yan,Yang, Linjie,Zhao, Jiuzhou,He, Jie,&Jiang, Hongxiang.(2022).Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy.MATERIALS,15(2),9.
MLA	Zhang, Lili,et al."Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy".MATERIALS 15.2(2022):9.