The effects of high pressure and superheating on the planar growth of Al3Ni phase in hypo-peritectic Al-30wt%Ni alloy

Wang, X.H.; Wang, H.W.; Zou, Chaoying; Wei, Zunjie; Uwatoko, Yoshiya; Gouchi, Jun; Nishio–Hamane, Daisuke; Gotou, Hirotada

doi:10.1016/j.jallcom.2018.09.079

Cited by 17 publications

(1 citation statement)

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“…It is important to explore the thermodynamic and kinetic changes, microstructural evolution and strengthening mechanisms under HP conditions. Generally, an increase in solidification pressure can change the eutectic point [ 23 ], increase the solubility of elements [ 24 ], and improve interfacial stability [ 25 ]. For Al-Si alloys, we have developed mathematical models to analyze the effect of pressure on the morphological evolution of the Al phase (spherical → cellular → dendritic) [ 26 ] and the Al-Si eutectic spacing [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Properties of SiC/Al-40Si Composites Fabricated by High Pressure Solidification

et al. 2023

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The microstructure and mechanical properties of SiC/Al-40Si composites prepared under high pressure were studied. As the pressure increases from 1 atm to 3 GPa, the primary Si phase in the Al-40Si alloy is refined. With increasing pressure, the composition of the eutectic point increases, the solute diffusion coefficient decreases exponentially, and the concentration of Si solute at the front of the solid–liquid interface of the primary Si is low, which contributes to the refining of the primary Si and inhibiting its faceted growth. The bending strength of SiC/Al-40Si composite prepared under 3 GPa was 334 MPa, which was 66% higher compared to the Al-40Si alloy prepared under the same pressure.

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