Casting defect

Applied sciences
Chemical engineering
Materials science
Casting

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Determination of Coherency and Rigidity Temperatures in Al-Cu Alloys Using In Situ Neutron Diffraction During Casting

Jean-Marie Drezet, Bastien Gilbert Pierre Mireux

The rigidity temperature of a solidifying alloy is the temperature at which the solid phase is sufficiently coalesced to transmit tensile stress. It is a major input parameter in numerical modeling of solidification processes as it defines the point at whi ...

Springer2014

Prediction of Hot Tear Formation in Vertical DC Casting of Aluminum Billets Using a Granular Approach

Michel Rappaz, Jean-Marie Drezet, André Phillion, Meisam Sistaninia

A coupled hydromechanical granular model aimed at predicting hot tear formation and stress-strain behavior in metallic alloys during solidification is applied to the semicontinuous direct chill casting of aluminum alloy round billets. This granular model c ...

Springer2013

Stress-Strain Predictions of Semisolid Al-Mg-Mn Alloys During Direct Chill Casting: Effects of Microstructure and Process Variables

Jean-Marie Drezet, André Phillion

The occurrence of hot tearing during the industrial direct chill (DC) casting process results in significant quality issues and a reduction in productivity. In order to investigate their occurrence, a new semisolid constitutive law (Phillion et al.) for AA ...

Springer Verlag2013

Interaction between liquid aluminium and solid iron Al-rich intermetallics formation

Guillaume Pasche

Intermetallic phases formation is one of the phenomena, which when coupled to thermal and mechanical strains leads to the premature wear of aluminium die casting tools made out of steel. This work focuses on two aspects of this wear problem. The first and ...

EPFL2013

A 3D coupled hydro-mechanical granular model for the prediction of hot tearing formation

Michel Rappaz, Jean-Marie Drezet, André Phillion, Meisam Sistaninia

A new 3D coupled hydro-mechanical granular model that simulates hot tearing formation in metallic alloys is presented. The hydro-mechanical model consists of four separate 3D modules. (I) The Solidification Module (SM) is used for generating the initial so ...

Iop Publishing Ltd2012

The influence of sodium and potassium hydroxide on volume changes in cementitious materials

Karen Scrivener, Aditya Kumar

This research investigates the influence of alkali hydroxides on unrestrained volume changes. A detailed multi-method approach is used to characterize the progress of cement hydration, autogenous and drying volume changes (i.e., shrinkage), autogenous RH d ...

Pergamon-Elsevier Science Ltd2012

A 3-D coupled hydromechanical granular model for simulating the constitutive behavior of metallic alloys during solidification

Michel Rappaz, Jean-Marie Drezet, André Phillion, Meisam Sistaninia

A three-dimensional (3-D) coupled hydromechanical granular model has been developed and validated to directly predict, for the first time, hot tear formation and stress strain behavior in metallic alloys during solidification. This granular model consists ...

Elsevier2012

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The influence of sodium and potassium hydroxide on volume changes in cementitious materials

Karen Scrivener, Aditya Kumar

Pergamon-Elsevier Science Ltd2012

Determination of Coherency and Rigidity Temperatures in Al-Cu Alloys Using In Situ Neutron Diffraction During Casting

Jean-Marie Drezet, Bastien Gilbert Pierre Mireux

Springer2014

Stress-Strain Predictions of Semisolid Al-Mg-Mn Alloys During Direct Chill Casting: Effects of Microstructure and Process Variables

Jean-Marie Drezet, André Phillion

Springer Verlag2013

A 3-D coupled hydromechanical granular model for simulating the constitutive behavior of metallic alloys during solidification

Michel Rappaz, Jean-Marie Drezet, André Phillion, Meisam Sistaninia

Elsevier2012