In this research, production of Cr 3 C 2 and Cr 7 C 3 carbides from chromium powder and graphite mixture with Cr 60 C 40 composition using mechanical alloying method was studied. Effects of parameters such as ball-mill speed, weight ratio of ball to powder and ball size on mechanical alloying process were investigated. Changes occurred in internal structure of the powder particle during mechanical alloying were investigated using X-ray diffraction (XRD). Also, changes in morphology and microstructure of the powder particles were studied employing scanning electron microscopy (SEM). Results in Cr 60 C 40 mixture show that mechanical alloying at first, establishes a lamellar layer consists of graphite and chromium layers. Layers thickness decreases by increasing the time of MA. Mechanical alloying to 40 hours, produces amorphous phase. Increasing the MA time to 50 hours, a mixture of Cr 3 C 2 and Cr 7 C 3 phases in an amorphous phase matrix would be obtained. By increasing the ball-mill rotation speed from 250 to 560 rpm at 50 hours MA, carbide phase of Cr 7 C 3 in an amorphous phase matrix would be obtained. Weight ratio ob ball to powder increased from 20 to 30 and Cr 7 C 3 carbide formation time decreased to 10 hours. Also, balls number (at constant weight ration of ball to powder) increases the amorphous matrix. Because completely equilibrated carbide obtained after the heat treatment of mechanically alloyed powders, therefore, the effect of ball-milling intensity on the productions type after heat treatment was investigated. By heat treatment at 800 o C an 2 hours on the 5 hours mechanically alloyed specimen with ball milling rotation of 250 rpm, single phase Cr 3 C 2 was obtained. Increasing the time and intensity of ball milling results in the increase in the intensity of Cr 7 C 3 phase with respect to the Cr 3 C 2 after next heat treatment. Also, increasing the time and temperature of heat treatment has a similar effect.