Simulation of facet dendrite growth with strong interfacial energy anisotropy by phase field method

Numerical simulations based on a new regularized phase field model were presented, simulating the solidification of magnesium alloy. The effects of weak and strong interfacial energy anisotropy on the dendrite growth are studied. The results indicate that with weak interfacial energy anisotropy, the entire dendrite displays six-fold symmetry and no secondary branch appeared. Under strong interfacial energy anisotropy conditions, corners form on both the main stem and the tips of the side branches of the dendrites, the entire facet dendrite displays six-fold symmetry. As the solidification time increases, the tip temperature and velocity of the dendrite and facet dendrite finally tend to stable values. The stable velocity of the facet dendrite is 0.4 at ε6 is 0.05 and this velocity is twice that observed (0.2) at ε6 is 0.005.

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Phase field method simulation of faceted dendrite growth with arbitrary symmetries

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(18)64662-x ◽

2018 ◽

Vol 28 (2) ◽

pp. 290-297 ◽

Cited By ~ 1

Author(s):

Zhi CHEN ◽

Pei CHEN ◽

He-he GONG ◽

Pei-pei DUAN ◽

Li-mei HAO ◽

...

Keyword(s):

Phase Field ◽

Field Method ◽

Dendrite Growth ◽

Phase Field Method ◽

Faceted Dendrite

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Impact on Solidification Dendrite Growth by Interfacial Atomic Motion Time with Phase Field Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.749.660 ◽

2013 ◽

Vol 749 ◽

pp. 660-667

Author(s):

Yu Hong Zhao ◽

Wei Jin Liu ◽

Hua Hou ◽

Yu Hui Zhao

Keyword(s):

Phase Field ◽

Field Model ◽

Phase Field Model ◽

Field Method ◽

Dendrite Growth ◽

Atomic Motion ◽

Phase Field Method ◽

Dendrite Morphology ◽

Motion Time ◽

Solidification Processes

The Phase Field model of solidification processes was carried out coupled with temperature field model. The influence of interface atomic time on dendrite growth morphology in undercooled melt was simulated with pure nickel. The experimental results show that when the interface atomic motion time parameter is minor, the liquid-solid interfaces were unstable, disturbance can be amplified easily so the complicated side branches will grow, and the disturbance speed up the dendrite growth. With the increase of , the liquid-solid interfaces become more stable and finally the smooth dendrite morphology can be obtained.

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Eutectic colony formation in systems with interfacial energy anisotropy: A phase field study

Computational Materials Science ◽

10.1016/j.commatsci.2017.01.007 ◽

2017 ◽

Vol 130 ◽

pp. 109-120 ◽

Cited By ~ 9

Author(s):

Arka Lahiri ◽

Chandrashekhar Tiwary ◽

Kamanio Chattopadhyay ◽

Abhik Choudhury

Keyword(s):

Field Study ◽

Phase Field ◽

Interfacial Energy ◽

Colony Formation ◽

Energy Anisotropy ◽

Interfacial Energy Anisotropy ◽

Eutectic Colony

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Phase-Field Micro-Solidification Simulation for Dendrite Growth in Ni-Cu Binary Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.830.3 ◽

2013 ◽

Vol 830 ◽

pp. 3-7

Author(s):

Wei Zhou Hou ◽

Hong Kui Mao

Keyword(s):

Phase Field ◽

Growth Parameters ◽

Field Method ◽

Isothermal Solidification ◽

Dendrite Growth ◽

Phase Field Method ◽

Solidification Condition ◽

Solidification Simulation ◽

Cu Alloy ◽

Undercooled Melt

By optimizing the relevant dendrite growth parameters of Ni-Cu alloy undercooling melt, it has studied the effect that the dendrite evolution process of undercooled melt and the degree of undercooling melt have on the dendrite growth of undercooling melt. In the isothermal and non-isothermal solidification condition, relatively accurate result is obtained by applying the phase field method to simulate Ni-Cu alloy. Simulation results show non-isothermal simulation with Neuman boundary condition suit to the actual physical process better.

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On the incorporation of cubic and hexagonal interfacial energy anisotropy in phase field models using higher order tensor terms

The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics ◽

10.1080/14786435.2014.958588 ◽

2014 ◽

Vol 94 (29) ◽

pp. 3331-3352 ◽

Cited By ~ 6

Author(s):

E.S. Nani ◽

M.P. Gururajan

Keyword(s):

Phase Field ◽

Interfacial Energy ◽

Higher Order ◽

Order Tensor ◽

Phase Field Models ◽

Energy Anisotropy ◽

Interfacial Energy Anisotropy

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Numerical Simulation of Dendrite Growth of Binary Alloy Using Phase-Field Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.133 ◽

2014 ◽

Vol 716-717 ◽

pp. 133-136

Author(s):

Fang Hui Liu ◽

Ming Gao

Keyword(s):

Temperature Gradient ◽

Binary Alloy ◽

Phase Field ◽

Field Model ◽

Phase Field Model ◽

Field Method ◽

Dendrite Growth ◽

Phase Field Method ◽

Dendrite Morphology ◽

Anisotropic Strength

In order to study the growth process and morphology of dendrite directly, a phase field model of binary alloy was established. In this model the order parameter equation was coupled with the temperature field and the solute field. The growing processes and morphology of dendrite were simulated by using this phase field model. Through analyzing the results, we discussed the effects of anisotropic strength and temperature gradient on dendrite morphology. The results shows that with the increasing of anisotropic strength, the dendrite growth rate of the dendrite will increase and the secondary branches appear more clearly. Besides, the temperature gradient has influence on the appearance of secondary arms during the dendrite growing. With the increase of temperature gradient, the size of secondary dendrite arms increase.

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