Production and characterization of an aluminum matrix composite reinforced with silica
Discontinuously reinforced MMC's have been particularly attractive due to the availability and cost of raw materials. The compatibility of the reinforcement with the aluminum matrix is critical when choosing appropriate reinforcements for aluminum matrix composites, Reactions between the reinfo...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_NIS21928_v_n_p_Ares |
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todo:paper_NIS21928_v_n_p_Ares2023-10-03T16:46:19Z Production and characterization of an aluminum matrix composite reinforced with silica Ares, A.E. De Napole Gregolin, E. Schvezov, C.E. Aluminum matrix Characterization Fiber reinforced MMC's Aluminum Characterization Corrosion resistance Fibers Liquids Metallic matrix composites Particle reinforced composites Reaction kinetics Reinforced plastics Reinforcement Silica Solidification Aluminum matrix Aluminum matrix composites Chemical interactions Discrete interface Fiber reinforced mmc's High temperature Solidification process Solidus temperature Linear transformations Discontinuously reinforced MMC's have been particularly attractive due to the availability and cost of raw materials. The compatibility of the reinforcement with the aluminum matrix is critical when choosing appropriate reinforcements for aluminum matrix composites, Reactions between the reinforcement and the matrix can lead to a loss of mechanical properties of the composite during processing or after a long service time, and when the parts are exposed to high temperatures, through the formation of new phases at the interface. Another problem often found is the decrease in corrosion resistance caused by chemical interactions between the reinforcement and the matrix. In this work we analyze the production of an aluminum matrix composite reinforced with silica, using commercial aluminum powder and fossil silica fibers by mixing and hot extruding the components to promote an efficient metallurgical interaction between the phases and good alignment of the fibers. Also, the bars obtained were heat treated below the solidus temperature of the matrix but above the Al-Si eutectic temperature, thus inducing the formation of a metaestable silicon-enriched liquid layer at the interface, increasing considerably the kinetics of the reaction. The liquid layer disappears at the end of the reaction or during cooling, through a difusional solidification mechanism similar to the IDF - Infiltration Difusional Solidification process. This transformation can be accurately controlled and used to eliminate the original discrete interface and to obtain a new suitable interface between the matrix and the fibers. CONF info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_NIS21928_v_n_p_Ares |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aluminum matrix Characterization Fiber reinforced MMC's Aluminum Characterization Corrosion resistance Fibers Liquids Metallic matrix composites Particle reinforced composites Reaction kinetics Reinforced plastics Reinforcement Silica Solidification Aluminum matrix Aluminum matrix composites Chemical interactions Discrete interface Fiber reinforced mmc's High temperature Solidification process Solidus temperature Linear transformations |
| spellingShingle |
Aluminum matrix Characterization Fiber reinforced MMC's Aluminum Characterization Corrosion resistance Fibers Liquids Metallic matrix composites Particle reinforced composites Reaction kinetics Reinforced plastics Reinforcement Silica Solidification Aluminum matrix Aluminum matrix composites Chemical interactions Discrete interface Fiber reinforced mmc's High temperature Solidification process Solidus temperature Linear transformations Ares, A.E. De Napole Gregolin, E. Schvezov, C.E. Production and characterization of an aluminum matrix composite reinforced with silica |
| topic_facet |
Aluminum matrix Characterization Fiber reinforced MMC's Aluminum Characterization Corrosion resistance Fibers Liquids Metallic matrix composites Particle reinforced composites Reaction kinetics Reinforced plastics Reinforcement Silica Solidification Aluminum matrix Aluminum matrix composites Chemical interactions Discrete interface Fiber reinforced mmc's High temperature Solidification process Solidus temperature Linear transformations |
| description |
Discontinuously reinforced MMC's have been particularly attractive due to the availability and cost of raw materials. The compatibility of the reinforcement with the aluminum matrix is critical when choosing appropriate reinforcements for aluminum matrix composites, Reactions between the reinforcement and the matrix can lead to a loss of mechanical properties of the composite during processing or after a long service time, and when the parts are exposed to high temperatures, through the formation of new phases at the interface. Another problem often found is the decrease in corrosion resistance caused by chemical interactions between the reinforcement and the matrix. In this work we analyze the production of an aluminum matrix composite reinforced with silica, using commercial aluminum powder and fossil silica fibers by mixing and hot extruding the components to promote an efficient metallurgical interaction between the phases and good alignment of the fibers. Also, the bars obtained were heat treated below the solidus temperature of the matrix but above the Al-Si eutectic temperature, thus inducing the formation of a metaestable silicon-enriched liquid layer at the interface, increasing considerably the kinetics of the reaction. The liquid layer disappears at the end of the reaction or during cooling, through a difusional solidification mechanism similar to the IDF - Infiltration Difusional Solidification process. This transformation can be accurately controlled and used to eliminate the original discrete interface and to obtain a new suitable interface between the matrix and the fibers. |
| format |
CONF |
| author |
Ares, A.E. De Napole Gregolin, E. Schvezov, C.E. |
| author_facet |
Ares, A.E. De Napole Gregolin, E. Schvezov, C.E. |
| author_sort |
Ares, A.E. |
| title |
Production and characterization of an aluminum matrix composite reinforced with silica |
| title_short |
Production and characterization of an aluminum matrix composite reinforced with silica |
| title_full |
Production and characterization of an aluminum matrix composite reinforced with silica |
| title_fullStr |
Production and characterization of an aluminum matrix composite reinforced with silica |
| title_full_unstemmed |
Production and characterization of an aluminum matrix composite reinforced with silica |
| title_sort |
production and characterization of an aluminum matrix composite reinforced with silica |
| url |
http://hdl.handle.net/20.500.12110/paper_NIS21928_v_n_p_Ares |
| work_keys_str_mv |
AT aresae productionandcharacterizationofanaluminummatrixcompositereinforcedwithsilica AT denapolegregoline productionandcharacterizationofanaluminummatrixcompositereinforcedwithsilica AT schvezovce productionandcharacterizationofanaluminummatrixcompositereinforcedwithsilica |
| _version_ |
1807315896467718144 |