The lineshape parameter

S

(

S

-parameter) in Doppler broadening spectra of positron annihilation and specific resistance have been measured at room temperature for three amorphous alloys (Fe

75

Si

10

B

15

Fe

73

Si

9.5

B

17

.

5

and Fe

71

Si

14

B

15

) after annealing at temperatures in the range of 20-625℃. The experimental results show that the variations of both

S

-parameter and specific resistance with annealing temperature are non-monotonous. Moreover

the difference of

S

-parameters between as-quenched sample and crystallized one is about 2%

which suggests that structure of the three amorphous alloys accord with the dense random packing structure of hard spheres rather than the microcrystal model.