Docteur en sciences des matériaux de l'université Paul Verlaine de Metz, et diplômé de l'École Européenne d'Ingénieur en Génie des Matériaux de Nancy.
Mécanismes d'endommagement et de traitement des surfaces métalliques. Mécanismes d'endommagement et de traitement des surfaces métalliques par un jet d'azote à basse temp
Par :Formats :
- Paiement en ligne :
- Livraison à domicile ou en point Mondial Relay estimée à partir du 16 septembreCet article sera commandé chez un fournisseur et vous sera envoyé 21 jours après la date de votre commande.
- Retrait Click and Collect en magasin gratuit
- Nombre de pages136
- FormatPoche
- PrésentationBroché
- Poids0.211 kg
- Dimensions15,0 cm × 22,0 cm × 0,8 cm
- ISBN978-3-8417-9090-3
- EAN9783841790903
- Date de parution06/03/2012
- CollectionOMN.UNIV.EUROP.
- ÉditeurUniv Européenne
Résumé
Nitrogen jet have been used recently for matter removal as well as surface treatment. The process consists in projecting onto a surface a low temperature jet obtained from releasing the liquid nitrogen stored in a high pressure tank through a nozzle. This work is aimed at understanding the highly complex jet/material surface interaction mechanisms. Depending on the impacted material, the thermo-mechanical shock and blast effect induced by the jet can activate a wide range of damage mechanisms, including cleavage, crack nucleation and spalling, as well as plastic deformation, void expansion and localized ductile failure.
The test parameters (standoff distance, dwell time, operating pressure) play a role in selecting the dominant damage mechanism, but combinations of these various modes are usually present. The main damage mechanism is the decohesion of the material due to thermo-elastic stress generated by the thermal shock. The fragmentation of grains and high-speed transport of nitrogen in a deep layer below the impacted surface and their relationship with the hardening of a surface layer are explored in the case of the steel E24.
The test parameters (standoff distance, dwell time, operating pressure) play a role in selecting the dominant damage mechanism, but combinations of these various modes are usually present. The main damage mechanism is the decohesion of the material due to thermo-elastic stress generated by the thermal shock. The fragmentation of grains and high-speed transport of nitrogen in a deep layer below the impacted surface and their relationship with the hardening of a surface layer are explored in the case of the steel E24.