A study on the low-cycle fatigue properties of SiCp/6061 Al composites
1997
Chen, Perng-Cheng | Lin, Su-Jien | Jahn, Min-Ten
Metal matrix composites (MMCs) were produced using a powder metallurgy method. Fatigue and tensile specimens were extruded and rolled before being machined. The matrix of the composite was a 6061 Al alloy and the reinforcement was 180 mesh SiC particle (SiCp). Different weight fractions (10, 20 and 30 wt%) of 180 mesh SiCp were introduced to determine the influence of the SiCp content on the tensile and low-cycle properties. Reasonable Coffin-Manson plots have been obtained in low-cycle fatigue. More accountable data of fatigue ductility exponents and fatigue ductility coefficients have been obtained for the composites and monolithic Al alloy. Increasing the content of SiCp has been shown to encourage the development of particle cracks and resulted in the degradation of fatigue properties.
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