Results 21 to 30 of about 23,384 (281)
Crystals, 2021 Control of solidification structure and crystallographic texture during metal additive manufacturing is a challenging work which attracts the increasing interest of researchers.
Xingbo Liu +3 more
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npj Microgravity, 2023 We review recent in situ solidification experiments using nonfaceted model transparent alloys in science-in-microgravity facilities onboard the International Space Station (ISS), namely the Transparent Alloys (TA) apparatus and the Directional ...
S. Akamatsu +13 more
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Xibei Gongye Daxue Xuebao, 2022 With the rapid development of aerospace and other high-tech fields, a new generation of high perfor-mance, high efficiency ultrahigh temperature structural materials and their preparation technologies increasingly becomes the focus of the development of ...
SHEN Zhonglin +4 more
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Onset of sidebranching in directional solidification [PDF]
Physical 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 +4 more sources
Numerical Simulation of Freckle Defects in Nickel based Superalloys
Journal of Harbin University of Science and Technology, 2020 In order to deeply understand the formation characteristics of freckle defects in the process of directional solidification of nickelbased superalloy, three major equations of fluid mechanics were used to simulate the formation of freckles during the ...
LIU Dong rong, REN Ying, GUO Er jun
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Transient Directional Solidification of Cast Iron: Microstructure Formation, Columnar to Equiaxed Transition and Hardness [PDF]
Materials Research, 2016 A number of applications may require cast iron. Engine cylinder blocks, flywheels, gearbox cases, machine-tool bases may be manufactured by using grey cast iron while bearing surfaces with white cast iron. Thus, understanding the solidification behaviour
Thiago Sartorello Spinola +1 more
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Transient convective instabilities in directional solidification [PDF]
, 2010 We study the convective instability of the melt during the initial transient in a directional solidification experiment in a vertical configuration. We obtain analytically the dispersion relation, and perform an additional asymptotic expansion for large ...
Meca, Esteban, Ramirez-Piscina, Laureano
core +1 more source
Capillary-wave description of rapid directional solidification [PDF]
Physical Review E, 2012 A recently introduced capillary-wave description of binary-alloy solidification is generalized to include the procedure of directional solidification. For a class of model systems a universal dispersion relation of the unstable eigenmodes of a planar steady-state solidification front is derived, which readjusts previously known stability considerations.
Korzhenevskii, Alexander L. +2 more
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High Temperature Materials and Processes, 2018 Distribution behavior of B and P during directional solidification of Al-20Si, Al-30Si and Al-40Si alloys has been investigated. Macrostructure of the Al-Si alloy ingots and concentration profile of elements B and P reveal that the elements segregate to ...
Bai Xiaolong +4 more
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Directional solidification: Transition from cells to dendrites [PDF]
Physical Review Letters, 1989 The evolution of cells and dendrites on a solidification front is analyzed numerically by a Green's-function method. We obtain a consistent picture of the pattern-forming processes in the whole experimentally accessible range of the phase-diagram cell spacing versus growth rate.
Müller-Krumbhaar, H. +2 more
openaire +3 more sources