Results 21 to 30 of about 267,967 (278)

Study on the solutal convection during dendrite growth of superalloy under directional solidification condition

open access: yesJournal of Materials Research and Technology, 2023
The solutal convection is able to affect the dendrite growth and solute distribution during directional solidification. The solutal convection is raised by the solute difference-caused buoyancy.
Yongjia Zhang   +5 more
doaj   +1 more source

Research progress in freckles of single crystal superalloys

open access: yesCailiao gongcheng, 2021
To meet the development needs of advanced aeroengines,the structure of aeroengine turbine blades is becoming increasingly complex, and the content of refractory elements is increasing in single crystal superalloys, which are the preferred materials for ...
WANG Zhi-cheng   +7 more
doaj   +1 more source

Research Progress on Numerical Simulation of Temperature Field during Directional Solidification of Nickel-based Single Crystal Turbine Blades [PDF]

open access: yesTeshugang
As one of the indispensable core components of advanced aero-engine, nickel-based single crystal turbine blades (hereinafter referred to as single-crystal blades) have extremely demanding requirements in terms of dimensional accuracy of the hollow ...
Sun Jiayi   +4 more
doaj   +2 more sources

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

Onset of sidebranching in directional solidification [PDF]

open access: yesPhysical Review E, 2010
We use a computationally efficient phase-field formulation [B. Echebarria, Phys. Rev. E 70, 061604 (2004)] to investigate the origin and dynamics of sidebranching in directional solidification for realistic parameters of a dilute alloy previously studied experimentally [M. Gorgelin and A. Pocheau, Phys. Rev. E 57, 3189 (1998)].
Echebarría Domínguez, Blas   +2 more
openaire   +3 more sources

Solidification behaviour of magnesium alloys [PDF]

open access: yes, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Magnesium alloys have been extensively used for structural and functional applications due to their low densities.
Jiang, Bo
core   +7 more sources

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

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

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