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A Model Describing Solidification Microstructure Evolution in an Inoculated Aluminum Alloys

文献类型：期刊论文

作者Song, Yan1,2; Jiang, Hongxiang1,2; Zhang, Lili2; Li, Shixin1,2; Zhao, Jiuzhou1,2; He, Jie1,2
刊名ACTA METALLURGICA SINICA-ENGLISH LETTERS
出版日期2020-10-31
页码11
ISSN号1006-7191
关键词Grain refinement Nucleation Dendritic growth Simulation Solidification
DOI10.1007/s40195-020-01154-5
通讯作者Zhao, Jiuzhou(jzzhao@imr.ac.cn)
英文摘要A 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.
资助项目Chinese 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研究方向Metallurgy & Metallurgical Engineering
语种英语
出版者CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号WOS:000583120000001
资助机构Chinese 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
源URL[http://ir.imr.ac.cn/handle/321006/141189]  
专题金属研究所_中国科学院金属研究所
通讯作者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		 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.

入库方式： OAI收割

来源：金属研究所

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