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A Model Describing Solidification Microstructure Evolution in an Inoculated Aluminum Alloys
Song, Yan1,2; Jiang, Hongxiang1,2; Zhang, Lili1; Li, Shixin1,2; Zhao, Jiuzhou1,2; He, Jie1,2
Corresponding AuthorZhao, Jiuzhou(jzzhao@imr.ac.cn)
2020-10-31
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages11
AbstractA population dynamics-cellular automaton (PD-CA) model is developed to describe the microstructure formation in an inoculated Al alloys. The model involves the dynamics behaviors of the inoculated particles and the nucleation, initial spherical growth of nuclei as well as the subsequent dendritic growth. The model was validated by using the experimental results for the Al-Cu alloys inoculated by Al-Ti-C refiner first, and then used to simulate the detailed solidification process in an inoculated Al-Cu alloy. The results indicate that the TiC is not stable in Al melt. The heterogeneous nucleation process consists of two stages: a very short initial stage dominated by the cooling rate and the later stage dominated by the number of the active TiC. It stops at the very moment the recalescence occurs. The average grains size d of the aluminum alloys inoculated by the Al-Ti-C refiner can be calculated by d(mu m) = a.exp(t/cIn(C(o)w))/(v(0001).t)(1/3)w(1/3) + b.In t/Q.v(cool)(1/2) is the growth restriction factor, C-0 (%) is the initial solutes composition, w (%) is the additive amount of Al-Ti-C refiner. t (min) is the holding temperature time since the Al-Ti-C refiner is added into the melt. a and b are the constants.
KeywordGrain refinement Nucleation Dendritic growth Simulation Solidification
Funding OrganizationChinese Academy of Sciences Strategic Priority Program on Space Science ; National Natural Science Foundation of China ; China's Manned Space Station Project ; Natural Science Foundation of Liaoning Province
DOI10.1007/s40195-020-01154-5
Indexed BySCI
Language英语
Funding ProjectChinese Academy of Sciences Strategic Priority Program on Space Science[XDA15013800] ; National Natural Science Foundation of China[51771210] ; National Natural Science Foundation of China[51971227] ; National Natural Science Foundation of China[51901231] ; China's Manned Space Station Project[TGJZ800-2-RW024] ; Natural Science Foundation of Liaoning Province[2019-BS-253]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000583120000001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141190
Collection中国科学院金属研究所
Corresponding AuthorZhao, 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
Song, Yan,Jiang, Hongxiang,Zhang, Lili,et al. A Model Describing Solidification Microstructure Evolution in an Inoculated Aluminum Alloys[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:11.
APA Song, Yan,Jiang, Hongxiang,Zhang, Lili,Li, Shixin,Zhao, Jiuzhou,&He, Jie.(2020).A Model Describing Solidification Microstructure Evolution in an Inoculated Aluminum Alloys.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA Song, Yan,et al."A Model Describing Solidification Microstructure Evolution in an Inoculated Aluminum Alloys".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):11.
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