Degassing with NaCl: A method for increasing the mechanical properties of an aluminum alloy A 319
DOI:
https://doi.org/10.33064/iycuaa2020813228Keywords:
degassing, morphology, porosity, homogenization, alloy, dissociationAbstract
The effect of degassing with Halita-type NaCl on the morphology of the eutectic Si, the porosity and the mechanical properties of an A 319 Al alloy was analyzed. The fusion of the Al with the encapsulated salt was performed in an A/SS electric oven S. FREDERIKSEN at a temperature of 760 °C, for 30 minutes, in order to achieve an adequate homogenization of the salt in the Al alloy, gentle agitation of the liquid metal was made. The loads were pieces with dimensions of 5 cm long and 8 cm thick to introduce them into the melting pot. With the percentages of NaCl used (1, 2 and 3% of the weight of the alloy) in the metal bath, the most favorable modification was achieved with 3% and a particle size of less than 100 μm, the dissociation of the chlorine ion allowed the removal of H, the porosity decreased...
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Copyright (c) 2020 Rubin Ortega-De la Rosa, J. Edgardo Estrada-De la Torre, Marco Alonso García-Romero, Omar Rocha-Echavarría, Pedro Antonio Bañuelos-Ruiz
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