RELATING THE DEBYE TEMPERATURE AND STRUCTURAL STABILITY OF RAPIDLY SOLIDIFIED AL-ALLOYS

The work described in this article was undertaken in an attempt to exp lain the high-temperature stability of rapidly solidified, face-center ed-cubic Al-8Mn-2Ni alloys by the change in Debye characteristic tempe rature (Theta). The Theta has been determined from the x-ray diffracti on intensities by evaluating Debye Waller factor B. It was found that Theta remains almost unchanged on annealing up to 623 K, thus predicti ng its high-temperature stability.