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

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