Synthesis and kinetic study of (Mo,W)Si2-WSi2 nanocomposite by mechanical alloying

► (Mo,W)Si2-WSi2 nanocomposite was produced by MSR mode during mechanical alloying. ► Heat treatment of as-milled powder caused to more formation of (Mo,W)Si2 and WSi2. ► Formation activation energy of (Mo,W)Si2 decreased with increasing milling time. ► Grain growth activation energy of (Mo,W)Si2 decreased after 80 h milling. ► Microhardness of MoSi2-WSi2 nanocomposite increased with increasing milling time.