Rapidly solidified ribbons of Al_(90)Nd_7Ni_3 metallic glasses were prepare d by using melt spinning. Crystallization process of the totally amorphous ribbo ns was investigated by differential scanning calorimetry and X-ray diffraction analysis,under continuous heating regime. The results show that,under continuo us heating regime,the metallic glass devitrifies via two main stages: primary c rystallization,resulting in two-phase mixture of α(Al) plus residual amor phous phase,and secondary crystallization,corresponding to some inter-metalli c phases appearing,successively including Al_(11)Nd_3,Al_3Ni,and some un known phases,in the Al amorphous/crystal matrix. Four peaks appear on the conti nuous heating DSC curves. Their peak temperatures are respectively 470.8,(570. 8,) (585.6,) and 731.6 K at infinitesimal heating rate,and their activation energies of the respective phase transformation are 183.0,294.7,232.5 and 269.1 kJ/mol. The values of Avrami exponent of the four reactions decrease with increasing relative transformation degree. At the earlier stage of phase trans formation,the values of n are larger than 4,and at the later stage the val ues of n become close to some value from 0.5 to 2.0. Rapidly solid ribbons of Al 90 Nd 7 Ni 3 metallic glasses were prepared d by using melt spinning. Crystallization process of the totally amorphous ribbo ns was investigated by differential scanning calorimetry and X-ray diffraction analysis, under continuous heating regime. The results show that, under continuus us heating regime, the metallic glass devitrifies via two main stages: primary c ry stallization, resulting in two-phase mixture of alpha (Al) plus residual amor phous phase, and secondary crystallization, corresponding to some inter- metalli c phases appearing, Such peaks include peaks in the Al_ (11) Nd_3, Al_3Ni, and some un known phases, in the AltimitiveNumbering DSC curves. Their peak temperatures are respectively 470.8, (570.8) (585.6 , and 731.6 K at infinitesimal heating rate, and their activation energies of the respective phase transformation are 183.0, 294.7, 232.5 and 269.1 kJ / mol. The values ​​of Avrami exponent of the four reactions decr ease with increasing relative transformation degree. At the earlier stage of phase trans formation, the values ​​of n are larger than 4, and at the later stage the val ues of n become close to some value from 0.5 to 2.0.