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Modeling columnar to equiaxed transition in directional solidification of Inconel 718 alloy
Computational materials science, 2020During processing of metallic alloys, control over the resulting microstructure is highly desired. Understanding the solidification process and insight into the kinetics of dendritic growth is extremely valuable, as the microstructural characteristics ...
Ryan Lenart, Mohsen Eshraghi
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Journal of Materials Science & Technology, 2019
In this study, the phase field method was used to study the multi-controlling factors of dendrite growth in directional solidification. The effects of temperature gradient, propelling velocity, thermal disturbance and growth orientation angle on the ...
Yu-hong Zhao +4 more
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In this study, the phase field method was used to study the multi-controlling factors of dendrite growth in directional solidification. The effects of temperature gradient, propelling velocity, thermal disturbance and growth orientation angle on the ...
Yu-hong Zhao +4 more
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, 2020
In this study, the microstructural characteristics of directionally solidified (DS) hypereutectic Nb-Si based alloys were investigated. The abrupt acceleration and deceleration of directional solidification were designed to explore the influence of ...
Chengtong Ye +4 more
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In this study, the microstructural characteristics of directionally solidified (DS) hypereutectic Nb-Si based alloys were investigated. The abrupt acceleration and deceleration of directional solidification were designed to explore the influence of ...
Chengtong Ye +4 more
semanticscholar +1 more source
Intermetallics (Barking), 2019
AlCoCrFeNi2.1 nominal eutectic high entropy alloy (EHEA) was prepared by directional solidification at different withdrawal rates (v = 5 − 100 μm/s). The directionally solidified samples exhibit superior mechanical properties. When the withdrawal rate is
Huiting Zheng +7 more
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AlCoCrFeNi2.1 nominal eutectic high entropy alloy (EHEA) was prepared by directional solidification at different withdrawal rates (v = 5 − 100 μm/s). The directionally solidified samples exhibit superior mechanical properties. When the withdrawal rate is
Huiting Zheng +7 more
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, 2020
Ni–Mn–Ga single crystal alloys can exhibit giant magnetic shape memory effect through variant reorientation induced by the magnetic field. However, such effect is greatly weakened in polycrystalline alloys, due to the orientation differences of ...
Zhenzhuang Li +10 more
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Ni–Mn–Ga single crystal alloys can exhibit giant magnetic shape memory effect through variant reorientation induced by the magnetic field. However, such effect is greatly weakened in polycrystalline alloys, due to the orientation differences of ...
Zhenzhuang Li +10 more
semanticscholar +1 more source
Shallow cells in directional solidification
Physical Review Letters, 1989The existing theory on two-dimensional transitions (appropriate to thin parallel-plate geometries) is presented in such a way that it is possible to identify easily conditions for the onset of shallow cells. Conditions are given under which succinonitrile-acetone mixtures should undergo supercritical bifurcation in experimentally accessible ranges ...
, Merchant, , Davis
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, 2020
To predict the dendrite morphology and microstructure evolution in the solidification of molten metal, numerically, lattice Boltzmann method (LBM) - cellular automata (CA) model has been developed by integrating the LBM to solve the mass transport by ...
Wonjoo Lee +6 more
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To predict the dendrite morphology and microstructure evolution in the solidification of molten metal, numerically, lattice Boltzmann method (LBM) - cellular automata (CA) model has been developed by integrating the LBM to solve the mass transport by ...
Wonjoo Lee +6 more
semanticscholar +1 more source
Preparation of high-purity Ti–Si alloys by vacuum directional solidification
, 2020To prepare high-purity Ti–Si alloys, we newly used vacuum directional solidification technology to purify and separate Ti–Si alloys, which have different compositions (Ti-8.45 wt%Si, Ti-63.7 wt%Si, Ti-71.6 wt%Si, and Ti-84.1%wt%Si).
Yakun Zhang +6 more
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Investigation of beta fleck formation in Ti-17 alloy by directional solidification method
, 2020Beta flecks are one of the most common defects occur in some α + β and β titanium alloys. In this study, formation of beta flecks in Ti-17 alloy was investigated by directional solidification experiments.
X. Yin +3 more
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Applied Mechanics Reviews, 1990
The mechanical and electrical properties of crystals produced by a unidirectional process depend strongly on the temperature and flow field in the melt since these control the concentration of solute at the melt–crystal interface. The solute gradient there drives morphological instabilities that lead to cellular or dendritic interfaces.
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The mechanical and electrical properties of crystals produced by a unidirectional process depend strongly on the temperature and flow field in the melt since these control the concentration of solute at the melt–crystal interface. The solute gradient there drives morphological instabilities that lead to cellular or dendritic interfaces.
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