Concept

Laminage

Publications associées (143)

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

Microstructure and mechanical properties of a W-2wt.%Y2O3 composite produced by sintering and hot forging

Philippe Spätig, Nadine Baluc, Robin Schäublin

A W-2Y(2)O(3) composite has been developed by powder metallurgy methods in collaboration with the Plansee Company (Austria). The microstructure of the composite was analyzed using transmission electron microscopy and electron backscatter diffraction in sca ...

2013

Assessment of a new fabrication route for Fe-9Cr-1W ODS cladding tubes

Roland Logé, Cyril Cayron

Oxide Dispersion Strengthened ferritic/martensitic steels are developed as future cladding materials for Generation IV Sodium-Cooled Fast Reactors. ODS alloys are elaborated by powder metallurgy, consolidated by hot extrusion and manufactured into tube cla ...

2012

W-2 wt.%Y2O3 composite: Microstructure and mechanical properties

Philippe Spätig, Nadine Baluc, Robin Schäublin

A W-2Y(2)O(3) composite is produced by powder metallurgy, including the pressing of the mixed elemental powders, their sintering and hot forging. The microstructure of the obtained composite is investigated using light microscopy, scanning electron microsc ...

2012

HOT TEARING SUSCEPTIBILITY IN DC CAST ALUMINUM ALLOYS

Jean-Marie Drezet, André Phillion

Hot tearing and loss of dimensional stability are two key defects related to industrial aluminum alloy casting processes. In order to investigate their occurrence, a new semi-solid constitutive law [20] for AA5182 that takes into account cooling rate, grai ...

TMS (The Minerals, Metals & Materials Society)2012

Evolution of microstructure and twin density during thermomechanical processing in a γ-γ' nickel-based superalloy

Roland Logé

Microstructure evolution has been studied in the nickel-based superalloy PER®72 subjected to hot torsion, to annealing below the primary γ' solvus temperature and to annealing at a supersolvus temperature, with a special emphasis on grain size and twin con ...

2012

Understanding and Modeling of Grain Boundary Pinning in Inconel 718

Roland Logé

The microstructure stability during δ sub-solvus annealing was investigated in Inconel 718 alloy. A reference dynamically recrystallized microstructure was produced through thermomechanical processing (torsion). The reference microstructure evolution durin ...

John Wiley and Sons2012

Using cross stamping to test Zinc sheets formability

Roland Logé

Sheet metal formability has been studied for a half century. The sheet formability is mostly described by the Forming Limit Diagram (FLD). A prediction of this FLD is a source of interest for industrial companies. Indeed knowing the FLD of a material allow ...

2012

Fast in-situ annealing stage coupled with EBSD: A suitable tool to observe quick recrystallization mechanisms

Roland Logé

A heating stage has been developed to perform in-situ annealing in a SEM equipped with an EBSD system in order to study recrystallization mechanisms. High temperature treatments could then be performed inside the SEM, up to 1180°C and with high heating and ...

2012

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