PRODUCTION OF AA7075/B4C COMPOSITE MATERIALS BY THE SEMI-SOLID STIRRING METHOD

AA7075 aluminum alloy was reinforced with B4C particles to producealuminum composite materials. In the production of AA7075/B4C compositematerials, the semi-solid mixing method was used for homogenousreinforcement dispersion and low-pressure solidification. For determinationof the mechanical properties of the obtained samples, three-point bending,compression and hardness tests were performed. Additionally, themicrostructure, reinforcement matrix interface and chemical structure of theproduced composite material were investigated by scanning electronmicroscopy (SEM), energy dispersive X-ray spectrometry (EDS) and X-raydiffraction (XRD) analyses. As a result, it was observed that, by using thesemi-solid mixing method, the reinforcing powders could be distributedhomogeneously into the matrix, both chemical and mechanical bondingcould be facilitated between the matrix and the reinforcing material, and thismixing technique could be easily used in production of particle-reinforcedmetal composites. As the reinforcement rate increased, bending strengthincreased, but there was a reduction in comparison to the non-reinforcedaluminum alloy. As the reinforcement rate increased, compressive strengthwas observed to decreased, while the mean hardness value increased.

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ISSN: 2536-5010
Yayın Aralığı: Yılda 2 Sayı
Yayıncı: INESEG Yayıncılık A.Ş.

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