Study on Dendritic Growth in Pressurized Solidification of Mg–Al Alloy Using Phase Field Simulation

Pan, Haowei; Zhou, Han; Liu, Baicheng

doi:10.1016/j.jmst.2015.09.005

Cited by 46 publications

(4 citation statements)

References 39 publications

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“…For multigrain growth, it is necessary to consider the effects of pressure on nucleation. Han et al [19,37] developed a nucleation model with pressure effects, based on which the nucleation rate in the same domain and the approximate pressure was calculated by Pan et al [37]. The nucleation rate was adopted in this study, with approximately 6 and 12 crystal nuclei seeded in the simulation domain under ambient pressure and 85 MPa, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The second term on the right-hand side of the concentration equation is the ‘anti-trapping’ current, which counterbalances spurious effects associated with the finite interface width during phase-field simulation [23,28]. Detailed definitions of the parameters in the governing equations and the introduction of anisotropy can be found in [22,23,36,37].…”

Section: Model Descriptionmentioning

confidence: 99%

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Phase-field modelling on effect of pressure on growth kinetics of Mg–Al–Sn alloy

Shang

Zhou

Luo

2018

Materials Science and Technology

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The effects of pressure on dendritic growth kinetics of Mg–Al–Sn alloy were investigated using a ternary phase-field model coupled with thermodynamics with pressure effects and experiments. The results showed that the improved growth velocity and nucleation rate caused by pressure had the opposite effects on grain size. For one-grain growth, the dendrite was larger and more developed under pressure of 85 MPa than that under ambient pressure owing to larger thermodynamic driving force, and thus higher growth velocity. However, when nucleation was considered in multigrain growth case, the average grain size under pressure was smaller owing to less growth space. Growth velocity decreased with the increase in Sn content, on which pressure had no great influence.

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Section: Resultsmentioning

confidence: 99%

Section: Model Descriptionmentioning

confidence: 99%

Phase-field modelling on effect of pressure on growth kinetics of Mg–Al–Sn alloy

Shang

Zhou

Luo

2018

Materials Science and Technology

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“…The effect of periodic pressure on dendritic growth has been studied experimentally and numerically by using the phase field method [11][12][13][14][15] . Phase field method [16][17][18][19][20][21][22][23] is a powerful tool to study dendritic growth and sidebranching during pressurized solidification [14,15,[24][25][26] . Börzsönyi et al [14,15] studied the effect of pressure on melting point in phase field model, and found that oscillating pressure or heating can tune the frequency of dendritic sidebranching dramatically.…”

Section: Influence Of Periodic Pressure On Dendritic Morphology and Smentioning

confidence: 99%

Influence of periodic pressure on dendritic morphology and sidebranching

et al. 2020

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D endritic growth behavior with side branches behind a dendrite tip is of great importance in the solidification process, which has significant influence on final microstructure and mechanical properties. It has been proved that pressure is an effective external perturbation to modulate dendritic growth and change sidebranching behavior [1-10]. Lacombe et al. [4-6] studied the effect of pressure on succinonitrile dendrite. According to the Clapeyron effect, the equilibrium melting temperature altered with the change of pressure, resulting in that the

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“…When it comes to a numerical method, the phase field method [14][15][16][17][18] which takes thermal dynamics under pressure into consideration, has become a powerful tool to study dendritic growth and sidebranching during pressurized solidification [19][20][21][22][23] . According to phase field research, when applied with constant pressure, the growth of dendrites is promoted, with raised tip velocity and developed dendritic arms [19] . When applied with periodic pressure, dendrite morphology and sidebranching frequency can be changed dramatically, since tip velocity is modulated by the periodic pressure [22,23] .…”

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Distinctions of dendritic behavior influenced by constant pressure and periodic pressure

Shang

Guo²,

Zhou

et al. 2021

China Foundry

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Dendrite morphology during solidification has a significant influence on mechanical properties. The feature of side branches, especially secondary dendritic arm spacing (SDAS), is associated with strength and toughness of alloys. It is of great importance to investigate the effect of external perturbation, such as heat and pressure, on dendritic growth and sidebranching [1][2][3][4][5][6][7][8][9][10] . According to the

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Study on Dendritic Growth in Pressurized Solidification of Mg–Al Alloy Using Phase Field Simulation

Cited by 46 publications

References 39 publications

Phase-field modelling on effect of pressure on growth kinetics of Mg–Al–Sn alloy

Phase-field modelling on effect of pressure on growth kinetics of Mg–Al–Sn alloy

Influence of periodic pressure on dendritic morphology and sidebranching

Distinctions of dendritic behavior influenced by constant pressure and periodic pressure

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