Phase separation and structure evolution of ternary Al–Cu–Sn immiscible alloy under ultrasonic levitation condition

Niu, Y.; Hong, Zhenyu; Geng, D. L.; Wang, W.L.; Wei, B.

doi:10.1016/j.jallcom.2012.07.147

Cited by 21 publications

(11 citation statements)

References 21 publications

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“…Equations (6) and (8) The crystals of the γ phase precipitate along with β during the four-phase peritectic reaction (9). The structure is similar to the experimental microstructure observed in Al-Cu-Sn and Al-Cu-Ni-Mg alloys [17,24]. The basis for the occurrence of the lamellar structure is that the both product phases, β and γ, have similar Gibbs free energies and symmetric concentration parameters.…”

supporting

confidence: 56%

“…For our study we chose the Al-reach corner of the phase di-1 arXiv:1307.3198v2 [cond-mat.mtrl-sci] 12 Jul 2013 agram of the Al-Cu-Ni system as a ternary model system, first because it has the advanced thermodynamic and phase equilibria data and second because the previous knowledge in the nucleation and the microstructure formation on the binary edge systems Al-Ni [11][12][13] and Al-Cu [14] can be directly included. Moreover, many experimental studies of the microstructure in ternary alloys have been reported in the literature [15][16][17] and there is the need for the theoretical comprehension of the various structure phenomena.…”

mentioning

confidence: 99%

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Phase-field modeling of the microstructure evolution and heterogeneous nucleation in solidifying ternary Al–Cu–Ni alloys

2015

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confidence: 56%

mentioning

confidence: 99%

Phase-field modeling of the microstructure evolution and heterogeneous nucleation in solidifying ternary Al–Cu–Ni alloys

2015

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“…[49] Such centrifugal force will drive the Sn-rich globules to migrate outward along radial direction of the sample. The centrifugal migration velocities V r of a spherical globule can be described as [47,50] V R r 2( )( ) 3 ( 23 )…”

Section: Phase Separation During Levitation Processingmentioning

confidence: 99%

Extraordinary Solidification Mechanism of Liquid Alloys Under Acoustic Levitation State

et al. 2022

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The acoustic levitation of various materials can be realized by highly intensive ultrasound, which provides a free surface and containerless state for materials processing under space simulation conditions. The nonlinear effects such as acoustic radiation pressure, acoustic streaming, and ultrasonic cavitation open up special access to modulate the fluid dynamics and solidification mechanisms of liquid materials. Here, the physical characteristics of liquid flow, undercooling capability, phase separation, and crystal nucleation and growth within acoustically levitated droplets are explored comprehensively to reveal the extraordinary solidification kinetics of liquid alloys. The sectorial shape oscillations of the 2nd to 10th order modes accompanying internal potential flow are observed for water droplets with modulated ultrasound amplitudes, while the enhanced ultrasound intensity promotes ice nucleation and thus reduces water undercooling. The migration of Sn‐rich globules during phase separation of immiscible Al–Cu–Sn alloy is dominated by the droplet deformation and rotation related to acoustic levitation. The high undercooling states of liquid Ag–Cu–Ge and Ni–Sn alloys during acoustic levitation result in the refinement of (Ag) dendrites and the formation of anomalous (Ni+Ni3Sn) eutectics. The ultrasound–liquid interaction also induces surface waves during the containerless solidification of Ag–Cu and Ni–Sn eutectic alloys.

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“…We have selected a Cu-based system for our study, as Cu is an extensively used, inexpensive optical material that offers low optical loss and 100% recyclability . The Cu–Al–Sn system has been chosen in particular, as it in theory can be leveraged to design networks based on both solid solutions and phase-separated mixtures . More details on the material selection can be found in the Supporting Information.…”

mentioning

confidence: 99%

“…19 The Cu−Al−Sn system has been chosen in particular, as it in theory can be leveraged to design networks based on both solid solutions and phase-separated mixtures. 20 More details on the material selection can be found in the Supporting Information.…”

mentioning

confidence: 99%

Chemical Engineering of Cu–Sn Disordered Network Metamaterials

et al. 2021

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The design and fabrication of large-area metamaterials is an ongoing challenge. In the present work, we propose a scalable design route and low-footprint strategy for the production of large-area, frequency-selective Cu–Sn disordered network metamaterials with quasi-perfect absorption. The nanoscale networks combine the robustness of disordered systems with the broad-band optical response known from connected wire-mesh metamaterials. Using experiments and simulations, we show how frequency-selective absorption in the networks can be designed and controlled. We observe a linear dependence of the optical response as a function of Sn content ranging from the near-infrared to the visible region. The absorbing state exhibits strong sensitivity to both changes in the global network topology and the chemistry of the network. We probe the plasmonic response of these nanometric networks by electron energy loss spectroscopy (EELS), where we resolve extremely confined gap surface-plasmon (GSP) modes.

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Phase separation and structure evolution of ternary Al–Cu–Sn immiscible alloy under ultrasonic levitation condition

Cited by 21 publications

References 21 publications

Phase-field modeling of the microstructure evolution and heterogeneous nucleation in solidifying ternary Al–Cu–Ni alloys

Phase-field modeling of the microstructure evolution and heterogeneous nucleation in solidifying ternary Al–Cu–Ni alloys

Extraordinary Solidification Mechanism of Liquid Alloys Under Acoustic Levitation State

Chemical Engineering of Cu–Sn Disordered Network Metamaterials

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