Results 11 to 20 of about 23,384 (281)

Formation mechanism of gradient structure of aluminum matrix composite under static magnetic field during directional solidification

open access: yesJournal of Materials Research and Technology, 2020
Aluminum matrix composite, as a new electronic packaging material, has attracted the attention of researchers. Effect of magnetic field on gradient structure of aluminum matrix composites (Al-21 wt.%Si and Al-40 wt.%Cu) has been investigated during ...
Shaodong Hu   +6 more
doaj   +1 more source

Numerical simulation of the directional solidification process with multi-shell mold being gradually immersed in water

open access: yesJournal of Materials Research and Technology, 2022
In order to improve the heat insulation effect, a multi-shell mold structure can be applied in directional solidification. As this kind of mold is gradually immersed into water, higher temperature gradient will be formed between the upper and the bottom ...
Jingying Xu   +4 more
doaj   +1 more source

Effect of growth rate on microstructure evolution in directionally solidified Ti–47Al alloy

open access: yesHeliyon, 2022
The microstructures and morphologies of directionally solidified Ti–47Al alloys with different growth rates ranging from 1 to 200 μm/s were investigated using the Bridgman directionally solidified method.
Tong Liu   +7 more
doaj   +1 more source

Influence of Directional Solidification on the Mechanical Properties of Cu-Al-Be-Nb-Ni Alloy [PDF]

open access: yesMaterials Research, 2019
Copper-based polycrystalline shape memory alloys (SMAs) have limitations for many practical applications due to their low superelasticity and low ductility.
Gabrielly de Lucena Tiburtino   +5 more
doaj   +1 more source

The columnar to equiaxed transition of horizontal unsteady-state directionally solidified Al-Si alloys [PDF]

open access: yesMaterials Research, 2014
Experiments were conducted to investigate the influence of thermal parameters on the columnar to equiaxed transition during the horizontal unsteady-state directional solidification of Al-Si alloys.
Diego B. Carvalho   +5 more
doaj   +2 more sources

Transition to chaos in directional solidification [PDF]

open access: yesPhysical Review Letters, 1991
Summary: Interface dynamics are analyzed theoretically in the quasilocal regime of directional growth explored by experiments on liquid crystals. We discover ``vacillating-breathing'' (VB) modes. Upon variation of the growth speed the interface motion enters a chaotic regime via a quasiperiodicity scenario.
Müller-Krumbhaar, H.   +2 more
openaire   +4 more sources

Phase field method study on the directional solidification microstructure of a Fe–C alloy under forced convection

open access: yes工程科学学报, 2023
A specific columnar crystal structure is obtained using the directional solidification technique, which has a substantial effect on the optimization of the axial mechanical properties of the alloy.
Hong-bo ZENG   +4 more
doaj   +1 more source

Directional solidification with interface dissipation [PDF]

open access: yesPhysical Review A, 1991
The front dynamics during directional solidification of a dilute binary mixture with noninstantaneous interface kinetic attachment is investigated in the weakly and highly nonlinear regimes. In the linear regime we find that, even for small enough kinetic coefficient, the most unstable mode is appreciably modified. With the help of multiscale analysis,
Saito, Y.   +3 more
openaire   +3 more sources

Preparation and Growth Characterization of Al2Cu Phase Crystal with the Single Orientation Under Directional Solidification [PDF]

open access: yesMaterials Research, 2018
Through decreasing the sample size, the regular faceted rectangular Al2Cu phase crystal was prepared under directional solidification. Effects of sample size on the microstructure morphologies and orientations of intermetallic Al2Cu phase crystal growth ...
Ka Gao   +7 more
doaj   +1 more source

Removal of Fe impurities from Al alloy scraps by electromagnetic directional solidification combined with Si addition

open access: yesJournal of Materials Research and Technology, 2023
The removal of Fe from Al alloy scraps is the main challenge for their recycling because the excess of Fe usually forms needle-like phases in the Al alloys, which reduces their mechanical properties.
Yakun Zhang   +3 more
doaj   +1 more source

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