Influence of melt convection on the columnar to equiaxed transition and microstructure of downward unsteady-state directionally solidified Sn–Pb alloys

JE Spinelli, IL Ferreira, A Garcia - Journal of Alloys and Compounds, 2004 - Elsevier
A combined theoretical and experimental approach is developed to quantitatively determine
the solidification thermal parameters: transient heat transfer coefficients, tip growth rates and …

Alloy composition and metal/mold heat transfer efficiency affecting inverse segregation and porosity of as-cast Al–Cu alloys

AP Boeira, IL Ferreira, A Garcia - Materials & Design, 2009 - Elsevier
Porosity is one of the most important defects in metals casting. In this study,
macrosegregation and porosity formation were investigated by a numerical model and by …

Microstructure features and mechanical/electrochemical behavior of directionally solidified Al− 6wt.% Cu− 5wt.% Ni alloy

AV Rodrigues, TS Lima, TA Vida, C Brito… - … of Nonferrous Metals …, 2021 - Elsevier
The effects of the addition of 5.0 wt.% Ni to an Al− 6wt.% Cu alloy on the solidification
cooling rate T˙ growth rate (VL), length scale of the representative phase of the …

Reducing porosity and optimizing performance for Al-Cu-based alloys with large solidification intervals by coupling travelling magnetic fields with sequential …

L Luo, L Luo, Y Su, L Su, L Wang, R Chen… - Journal of Materials …, 2021 - Elsevier
Porosity is a major casting defect in alloys with large solidification intervals due to the
disordered microstructure and broad mushy zones, which decreases badly the mechanical …

Solidification modelling for coupling prediction of porosity and segregation

Z Gao, W Jie, Y Liu, H Luo - Acta Materialia, 2017 - Elsevier
Porosity is a common casting defect induced by solidification shrinkage as well as gas
segregation, nevertheless, it may exert a beneficial effect on reducing alloying element …

Optimizing the microstructures and mechanical properties of Al-Cu-based alloys with large solidification intervals by coupling travelling magnetic fields with sequential …

L Luo, L Luo, RO Ritchie, Y Su, B Wang, L Wang… - Journal of Materials …, 2021 - Elsevier
Alloys with large solidification intervals are prone to issues from the disordered growth and
defect formation; accordingly, finding ways to effectively optimize the microstructure, further …

Analytical, numerical, and experimental analysis of inverse macrosegregation during upward unidirectional solidification of Al-Cu alloys

IL Ferreira, CA Santos, A Garcia, VR Voller - Metallurgical and Materials …, 2004 - Springer
The present work focuses on the influence of alloy solute content, melt superheat, and
metal/mold heat transfer on inverse segregation during upward solidification of Al-Cu alloys …

A model for coupling prediction of inverse segregation and porosity for up-vertical unidirectional solidification of Al–Cu alloys

Z Gao, W Jie, Y Liu, Y Zheng, H Luo - Journal of Alloys and Compounds, 2019 - Elsevier
A mathematical model for coupling prediction of inverse segregation and porosity for up-
vertical unidirectional solidification of Al–Cu alloys is established, based on the analysis of …

Effect of microstructural evolution and elevated temperature on the mechanical properties of Ni–Cr–Mo alloys

E Karaköse, M Keskin - Journal of Alloys and Compounds, 2015 - Elsevier
This paper characterizes the impact of solidification rate on the morphology and type of
microstructural and mechanical properties of a nickel-based superalloy with a nominal …

Eliminating shrinkage defects and improving mechanical performance of large thin-walled ZL205A alloy castings by coupling travelling magnetic fields with sequential …

LUO Lei, H Xia, L Luo, Y Su, C Cai, W Liang… - … of Nonferrous Metals …, 2021 - Elsevier
ZL205A alloys with large thin-walled shape were continuously processed by coupling
travelling magnetic fields (TMF) with sequential solidification, to eliminate the shrinkage …