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Synergistic Effect of La and TiB2 Particles on Grain Refinement in Aluminum Alloy
Zhang, Lili1; Song, Yan1,2; Yang, Linjie1,2; Zhao, Jiuzhou1,2; He, Jie1,2; Jiang, Hongxiang1,2
Corresponding AuthorZhang, Lili(llzhang@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn)
2022
Source PublicationMATERIALS
Volume15Issue:2Pages:9
AbstractSynergistic 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.
Keywordgrain refinement microstructure segregation heterogeneous nucleation metals and alloys
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China ; Natural Science Foundation of Liaoning Province
DOI10.3390/ma15020600
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000757059300001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173475
Collection中国科学院金属研究所
Corresponding AuthorZhang, Lili; Zhao, Jiuzhou
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Univ Sci Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
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.
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