Crystallization behavior and glass transition phenomenon of Al 89 Ni 6 La 5 , Al 87 Ni 6 La 7 and Al 87 Ni 5 La 7 M 1 (M=Ag, Cu) metallic glasses have been studied by temperature modulated differential scanning calorimetry (TMDSC). A clear glass transition of these glasses, which could not be detected in conventional differential scanning calorimetry (DSC), even at higher heating rates, was observed through TMDSC measurements. All these glasses undergo two-stages of crystallization on heating. The precipitation and growth of fcc-Al in Al 89 Ni 6 La 5 and bcc-metastable phase in other alloys are responsible for the first stage of crystallization. The glass transition phenomenon in these alloys except Al 87 Ni 6 La 7 , could not be detected in DSC because the signals are overlapped with the relatively large heat release from the primary crystallization. This was confirmed from the TMDSC measurements. These measurements were necessary for the development of new nanocrystalline/amorphous composite materials.