The Effect of Natural Convection on Equiaxed Dendritic Growth: Quantitative Phase-Field Simulation and Comparison with Synchrotron X-Ray Radiography Monitoring Data
المؤلفون المشاركون
Qi, Xin Bo
Chen, Yun
Kang, Xiu Hong
Li, Dian Zhong
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2016، العدد 2016 (31 ديسمبر/كانون الأول 2016)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2016-09-29
دولة النشر
مصر
عدد الصفحات
10
الملخص EN
A two-dimensional (2D) quantitative phase-field model solved by adaptive finite element method is employed to investigate the effect of natural convection on equiaxed dendritic growth of Al-4 wt.%Cu alloy under continuous cooling condition.
The simulated results are compared with diffusion-limited simulations as well as the experimental data obtained by means of in situ and real-time X-ray imaging technique.
The results demonstrate that natural convection induced by solute gradients around the dendritic crystal has an obvious influence on the dendrite morphology and growth dynamics.
Since the rejected solute cooper from solid is heavier than aluminum, it sinks down along the interface from the top arm tip to the bottom arm which results in the formation of a circulatory flow vortex on both sides of the dendrite.
Hence, the convection promotes the top arm advancing into the melt progressively whereas it suppresses the growth of bottom severely.
As the dendrite grows into a large size, the convection becomes more intense and the morphology shows distinguished asymmetric shape.
When compared with experimental data, the growth velocity is found to agree substantially better with the simulation incorporating natural convection than the purely diffusive phase-field predictions.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Qi, Xin Bo& Chen, Yun& Kang, Xiu Hong& Li, Dian Zhong. 2016. The Effect of Natural Convection on Equiaxed Dendritic Growth: Quantitative Phase-Field Simulation and Comparison with Synchrotron X-Ray Radiography Monitoring Data. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096200
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Qi, Xin Bo…[et al.]. The Effect of Natural Convection on Equiaxed Dendritic Growth: Quantitative Phase-Field Simulation and Comparison with Synchrotron X-Ray Radiography Monitoring Data. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1096200
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Qi, Xin Bo& Chen, Yun& Kang, Xiu Hong& Li, Dian Zhong. The Effect of Natural Convection on Equiaxed Dendritic Growth: Quantitative Phase-Field Simulation and Comparison with Synchrotron X-Ray Radiography Monitoring Data. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096200
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1096200
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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