Réalisation d'alliages de surface base aluminium par traitement laser ; charactérisation microstructurale et méchanique du bimatériau élabore (Institut National des Sciences Appliquees de Lyon). PDF Download
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Author: S. Bonnet
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ISBN:
Category :
Languages : fr
Pages :
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Author: S. Bonnet
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author: SOPHIE.. JOBEZ-BONNET
Publisher:
ISBN:
Category :
Languages : fr
Pages : 16
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ELABORATION D'ALLIAGES DE SURFACE PAR REFUSION SUPERFICIELLE A L'AIDE D'UN LASER CO::(2) DE FORTE PUISSANCE ET D'AJOUT DE NICKEL. IDENTIFICATION DES DENDRITES DE TYPE AL::(3)NI ET AL::(3)NI::(2) PAR MEB, MEBT, RX. ETUDES THEORIQUE ET EXPERIMENTALE. INTERACTION LASER-MATIERE
Author: AHMAD.. ISSA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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NOUS NOUS SOMMES INTERESSES A LA REALISATION D'ALLIAGES DE SURFACE, PAR IRRADIATION A L'AIDE D'UN LASER CO#2, D'ECHANTILLONS CONSTITUES: SOIT D'UN SUBSTRAT BASE ALUMINIUM, ET D'UN DEPOT DE 30 A 200 MICRONS DE NICKEL OU D'UN DEPOT D'ALLIAGE BASE COBALT; LE BUT EST L'AMELIORATION DES PROPRIETES MECANIQUES ET TRIBOLOGIQUES DE LA SURFACE, SOIT D'UN SUBSTRAT BASE CUIVRE ET D'UN DOUBLE DEPOT DE NICKEL (20-30 MICRONS) ET DE CHROME (1-5 MICRONS); DANS CE CAS LA FINALITE RECHERCHEE EST L'ACCROISSEMENT DES PROPRIETES MECANIQUES ET PHYSICOCHIMIQUES, C'EST-A-DIRE LA RESISTANCE A LA CORROSION. LE PRINCIPE ADOPTE CONSISTE A PORTER LA SURFACE DE L'ECHANTILLON AU-DELA DU POINT DE FUSION, POUR PROVOQUER L'INTERDIFFUSION, EN PHASE LIQUIDE, DES DIFFERENTS ELEMENTS CHIMIQUES EN PRESENCE. APRES UNE PHASE D'OPTIMISATION DES PARAMETRES EXPERIMENTAUX, DES ALLIAGES DE SURFACE SAINS ET HOMOGENES SONT OBTENUS, PUIS CARACTERISES; UNE CORRELATION EST ETABLIE ENTRE LA MICROSTRUCTURE ET LES PROPRIETES MECANIQUES OU PHYSICOCHIMIQUES. EN PARALLELE, NOUS AVONS DEVELOPPE UN MODELE DE TRANSFERT THERMIQUE DANS LES ECHANTILLONS BI-COUCHES. TROIS TYPES DE PARAMETRES ENTRENT EN JEU, LIES AU FAISCEAU LASER LUI-MEME, A L'INTERACTION LASER-MATERIAU ET MATERIAU PROPREMENT DIT (PROPRIETES THERMIQUES ET PHYSICOCHIMIQUES). UNE COMPARAISON AVEC LES RESULTATS EXPERIMENTAUX PERMET DE VALIDER CE MODELE, SEMI-QUANTITATIVEMENT
Author:
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ISBN:
Category : Engineering
Languages : en
Pages : 554
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Author: Norbert Broll
Publisher:
ISBN:
Category : Electronic books
Languages : fr
Pages : 592
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Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
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This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Author:
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Category : Government reports announcements & index
Languages : en
Pages : 1672
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Author: Bozidar Liscic
Publisher: Springer Science & Business Media
ISBN: 366201596X
Category : Technology & Engineering
Languages : en
Pages : 499
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Heat treatment of metallic alloys constitutes an important step within the production process. The heat treatment process itself is considered as a cycle of heating the workpieces to a predetermined temperature, keeping them at this temperature for the time period required, and cooling them to room temperature in an appropriate way. The process of heating and keeping workpieces at the required temperature is now adays weil mastered and mostly automatized. The process of cooling or quenching which determines actually the resulting properties, is handicapped with many physical and technical uncertainties. Good results can already be obtained predominantly by using empirically based practice. But increased demands on the properties of the pro ducts as weIl as demands on safety and environment conditions of the quenching media require efforts to investigate the details of the quenching process and to transfer the results of the research to practical application. Advances in the knowledge about quenching processes have been achieved by modem applied thermodynamics especially by the heat and mass transfer researches; further the application of computer technology was helpful to new approaches in quenching pro cesses. Special emphases has been given to: - The theory of heat transfer and heat exchange intensification during quenching - Wetting kinematics - Residual stresses after quenching - Determination of the quenching intensity - Prediction of microstructural transformation and hardness distribution after quenching, the latter with some limitations.
Author: Kaiser Engineers
Publisher:
ISBN:
Category : Nuclear power plants
Languages : en
Pages : 140
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Author: J. Belle
Publisher:
ISBN:
Category : Nuclear fuels
Languages : en
Pages : 146
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