Abstract
One of the major challenges in producing composites is the uniform distribution of micro/nano-sized particles in the metal matrix by powder metallurgy methods and liquid state processes. Friction stir process (FSP) is a solid process used to produce composites for modifying the microstructure and improving material properties due to the longer heat exposure time and the multi-pass FSP process results in more strengthening phases forming and homogeneous distribution in the matrix. In this study, a groove with a size of 5×5 mm was created on the pure Mg sheet. Then, the SiC reinforcing particles with the micro and nano-size were poured into the groove separately. The properties of the produced prototypes, such as microhardness, tensile strength, and wear resistance, were investigated. The results showed that the hardness and tensile strength of the reinforced samples were improved compared to the pure Mg sheet. The average hardness of pure Mg increased from 69.45 HV to 74.34 HV in the micro composite and 82.1 HV in the nanocomposite. The results of the tensile test also showed improvement from 160.01 MPa for pure Mg to 214.01 MPa for nanocomposite and 189 MPa for micro composite. Also, the wear rate decreased from 0.09 mg/m for the pure Mg sample to 0.05 mg/m for the micro composite sample and 0.02 mg/m for the nanocomposite sample; the abrasion resistance improved as well.
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Kaveh Rahmani graduated in mechanical engineering (Ph.D.) from Bu Ali Sina University. He is a postdoctoral researcher at Bu Ali Sina University. His current research interests include FGM, FML, nanocmposite, Powder metallurgy and compaction under high strain rate.
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Sadooghi, A., Rahmani, K. Experimental study on mechanical and tribology behaviors of Mg-SiC nano/micro composite produced by friction stir process. J Mech Sci Technol 35, 1121–1127 (2021). https://doi.org/10.1007/s12206-021-0225-9
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DOI: https://doi.org/10.1007/s12206-021-0225-9