Concept

Brazing

Publications associées (115)

Laminated Metal Composites by Infiltration

Andreas Mortensen, Andreas Rossoll, Jérôme Krebs, Arda Cetin, Alexandre Durussel

We show that steel-magnesium alloy laminated metal composites (LMCs) can be produced by gas pressure infiltration of a liquid magnesium alloy between layers of stacked dimpled steel sheets. Resulting LMCs are amenable to subsequent warm rolling. The LMCs a ...

Springer US2011

Intergranular penetration of liquid gold into stainless steel

Michel Rappaz, Denis Favez, Léa Deillon, Jean-Daniel Wagnière

Intergranular penetration of liquid 18 K gold into a superaustenitic stainless steel, which occurs during laser welding of these two materials, has been studied using a C-ring device which can be put under tensile stresses by a screw. It is shown that liqu ...

Elsevier2011

E. coli Inactivation by High-Power Impulse Magnetron Sputtered (HIPIMS) Cu Surfaces

César Pulgarin, Juan Kiwi, Andrzej Kulik, Oualid Baghriche

This study reports HIPIMS-sputtered samples of Cu-particulate films with currents at 6 and 60 amps leading to E. coil inactivation. The Cu coverage and nanoparticle structure of the fibers is reported by TEM. Evidence is presented of redox processes in the ...

2011

Au-Fe alloy solidification and solid-state transformations

Michel Rappaz, Jean-Daniel Wagnière

In order to better understand the microstructure that forms during laser welding of an 18 carat gold and an austenitic stainless steel, solidification of the Au-Fe binary analog has been studied using thermal analysis and interrupted Bridgman experiments. ...

Elsevier2010

Coupling quantum and continuum scales to predict crack tip dislocation nucleation

William Curtin, Derek Warner

A quantum-continuum multiscale coupling of Kohn-Sham density functional theory to continuum material is presented that can handle mechanics problems in metals when long-range stress fields are present, such as occurs for dislocations and cracks. The method ...

2010

Gyrokinetic Simulations of Microturbulence in TCV Electron Internal Transport Barriers

Olivier Sauter, Laurent Villard, Stephan Brunner, Xavier Lapillonne

Using the Eulerian code GENE [1], gyrokinetic simulations of microturbulence were carried out under conditions relevant to electron-Internal Transport Barriers (eITB) in the TCV tokmak [2], generated under conditions of low or negative shear. For typical d ...

2010

Current-driven, electrically detected ferromagnetic resonance in electrodeposited spin valves

Jean-Philippe Ansermet, Elena Murè

We investigate the ferromagnetic resonance of Co/Cu/Co trilayers by use of AC-spin-transfer torque excitations. Magnetic structures are grown in a 6-mu m-thick commercial nanoporous polycarbonate membranes by use of electrodeposition in a cobalt/copper sin ...

2010

Consolidation of net-shape random fiber thermoplastic composite preforms

Véronique Michaud, Patrick Blanchard, Martyn Douglas Wakeman, Simon Jespersen

A novel thermoplastic composite preforming process has been developed. This thermoplastic programmable powdered preforming process (TP-P4) uses commingled glass and polypropylene yarns, which are chopped to a desired length and deposited onto a vacuum scre ...

2010

Preform to produce metallic foam

Andreas Mortensen

A process for producing a metal article containing at least 10% interconnected porosity, using a preform (11), comprising: mixing an organic binder, a wetting agent and a granular material, to obtain a mouldable paste that combines 10 vol. pct. or more of ...

2010

High-porosity channels for melt migration in the mantle: Top is the dunite and bottom is the harzburgite and lherzolite

Jan Sickmann Hesthaven

High-porosity dunite channels are important pathways for melt migration in the mantle. To better understand the first order characteristics of the high-porosity melt channel and its associated peridotite lithologies in an upwelling mantle, we conducted hig ...

American Geophysical Union2010

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