Articles liés à The Use Of Cold Sprayed Alloys For Metallic Stents

The Use Of Cold Sprayed Alloys For Metallic Stents - Couverture souple

Almangour, Bandar

 
9783848421572: The Use Of Cold Sprayed Alloys For Metallic Stents
Couverture souple
ISBN 10 : 3848421577 ISBN 13 : 9783848421572
Editeur : LAP LAMBERT Academic Publishing, 2014

Synopsis

1- This study shows the ability to successfully cold-spray 316L stainless steel using nitrogen and helium as a propellant gas. The microstructure was characterized with low porosity and fine grain structure. In addition, after post-processing heat treatment, the microstructure became denser (i.e. lower porosity). The microhardness did not change with 400°C annealing temperature but decreased significantly at 800°C, which can be explained by the recrystallization that occurs during cold-spraying. Both the ductility and strength were improved after annealing at 1100°C, in particular. 2- This study shows the ability to successfully cold-spray composite 316L-CoCr using nitrogen as a propellant gas with Co-Cr volume fractions (i.e. 25%, 33.3%). The deposition efficiency decreased with increasing the amount of Co-Cr. The microstructure is characterized by low porosity level in the first two mixes. At 50% as mixed Co-Cr and 316L, the actual as coated material was 33% Co-Cr, due to difficulties in bonding Co-Cr particles to each other. Thus, the porosity was high at the 50% mixture and cracks were also apparent.

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Présentation de l'éditeur

1- This study shows the ability to successfully cold-spray 316L stainless steel using nitrogen and helium as a propellant gas. The microstructure was characterized with low porosity and fine grain structure. In addition, after post-processing heat treatment, the microstructure became denser (i.e. lower porosity). The microhardness did not change with 400°C annealing temperature but decreased significantly at 800°C, which can be explained by the recrystallization that occurs during cold-spraying. Both the ductility and strength were improved after annealing at 1100°C, in particular. 2- This study shows the ability to successfully cold-spray composite 316L-CoCr using nitrogen as a propellant gas with Co-Cr volume fractions (i.e. 25%, 33.3%). The deposition efficiency decreased with increasing the amount of Co-Cr. The microstructure is characterized by low porosity level in the first two mixes. At 50% as mixed Co-Cr and 316L, the actual as coated material was 33% Co-Cr, due to difficulties in bonding Co-Cr particles to each other. Thus, the porosity was high at the 50% mixture and cracks were also apparent.

Biographie de l'auteur

Bandar Abdulaziz AlMangour,PhD Candidate in UCLA, Materials science and Engineering,M.Eng, McGill university, Materials Engineering, 2012 Research interests: understanding of the structure-property relationships, simulation & characterization of advanced structural metals in particular nanostructured alloys, manufacturing and materials processing

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2014
Langue
anglais
ISBN 10 
3848421577
ISBN 13 
9783848421572
Reliure
Broché
Nombre de pages
112
Coordonnées du fabricant
non disponible
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