Phase and Crystal Structure Evolution of MoSi<sub>2</sub>-AlCr<sub>2</sub> Quasibinary System Alloys

Abstract

On the principle of alloying modification of the same crystal structure compound, MoSi2-AlCr2quasibinary system alloys were prepared by mechanical activation and hot pressed sintering.The phase composition and crystal structure evolution were investigated by X-ray diffractometer(XRD).The results showed that the main phase composition of alloys were MoSi2and Mo(Si,Al)2,the crystal structure was gradually transformed from tetragonal C11bMoSi2to hexagonal C40 Mo(Si,Al)2. (Mo,Cr)(Si,Al)2phase has not found in alloys.