Hot restoration mechanism flow stress and stain of the Al2024 composites reinforced with 1,8,15,36, and $44{mu}m;SiC_p$(10 vol. %) were studied by hot torsion tests. The hot restoration mechanism of all the composites was found to be dynamic recrystallization(DRX) at $320^{circ}C$ while that of the composites reinforced with 1 and $8{mu}m;SiC_p$ was found to be dynamic recovery(DRX) at $480^{circ}C$. It was found that the Al2024 composite with $15{mu}m;SiC_p$ showed the highest flow stress(${sim}$223 MPa) at $320^{circ}C$ under a strain rate of 1.0/sec. Also the highest flow strain of the composites was obtained at $430^{circ}C$. The com-posites reinforced with 1 and $8{mu}m;SiC_p$ showed lower flow stress and higher flow strain at $480^{circ}C$ than those of the composites reinforced with 15, 36, and $44;{mu}m;SiC_p$ These result were discussed in relation to the transition of the hot restoration mechanism. $DRX{leftrightarrow}DRV$. The dependence of flow stress on strain rate and temperature was attempted to fit with the hyperbolic sine equation ($dot{varepsilon}=A[sinh({alpha}{cdot}{sigma}_p]^n$ exp(-Q/RT)and Zener-Hollomon parameter($Z=;dot{varepsilon};exp(Q/RT))$.