06/2021
10.20944/preprints202106.0427.v1
Metals 2021, 11, 1147
Alu-Q, Aluminio, Ana Fernandez, Andrea Niklas, Asier Bakedano, I+D+i, Materiales ligeros, Materiales secundarios, Tecnologías de fundición
This work has the purpose to demonstrate that if an adequate melt treatment is applied, it is possible to obtain recycled aluminum alloy AlSi10MnMg(Fe) with as good metal cleanliness than primary AlSi10MnMg alloy. The melt quality is assessed by the thermal analysis, density index, macro- and micro-inclusions tests, of one primary and two secondary alloys, before and after the melt treatment. The melt treatment is based on deoxidation, degassing and skimming with de-tailed procedure described in this article. The different analysis are: Thermal analysis to compare the variables of the solidification cooling curve (Al primary temperature and its undercooling; Al-Si eutectic temperature and its recalescence); Density index is used to evaluate the hydrogen gas content in the melt; Macroinclusions level is analysed after solidifying the melt under vacuum of 5 mbar, favouring inclusion floatation to the sample surface; Microinclusion level is evaluate with porous disc filtration apparatus (similar to PoDFA).
Asier Bakedano (AZTERLAN); Andrea Niklas (AZTERLAN); Ana Isabel Fernández-Calvo (AZTERLAN); Gorka Plata (Mondragon Unibertsitatea); Jokin Lozares (Mondragon Unibertsitatea); Carlos Berlanga-Labari (INAMAT2).
Melt cleanliness, Secondary alloy; Primary alloy; Density index; Inclusions; AlSi10MnMg alloy
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