Properties of Semisolid Parts: Comparison with Conventional and Innovative Manufacturing Technologies

Abstract:

In this paper, wear properties of samples manufactured using thixocasting were compared with those of components obtained using low-pressure die-casting and additive manufacturing in order to assess the relationship between material performance and production technologies, both conventional and innovative. The investigated items were made with AlSi7Mg alloy. First, microstructural analysis and hardness measurements were carried out. Subsequently, pin-on-disk wear tests were performed. Wear behavior of the samples was studied considering both coefficient of friction and wear rate, while the damage mechanism was analyzed by observation of the worn paths using scanning electron microscope, correlating the behavior to the specific microstructure. In addition, the effect of selected heat-treated conditions, relevant for real applications, on wear properties was also evaluated.

• Periodical: Solid State Phenomena (Volume 327)
• Pages: 197-206
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.327.197
• Online since: January 2022
• Authors: Pietro Tonolini, Annalisa Pola*, Lorenzo Montesano, Marialaura Tocci, Marcello Gelfi, Giovina Marina La Vecchia
• Keywords: Additive Manufacturing Heat Treatment, AlSi7Mg Alloy, Microstructure, Thixocasting, Wear Behavior

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