We present the order-disorder transition temperatures for bcc Cu-Zn-Al shape-memory alloys measured by means of calorimetric and resistometric techniques. The investigation includes the line of compositions Cu 0.76−x/2 -Zn x -Al 0.24−x/2 ͑0 ഛ x ഛ 0.48͒, i.e., the line with a constant conduction electron per atom ratio, e / a = 1.48. Experimental results are confronted with Monte Carlo simulations based on the Blume-Emery-Griffiths Hamiltonian. A set of exchange energies in first and second neighbors is calculated, which allows in close agreement reproduction of the experimental phase diagram.

No abstract

No abstract

No abstract

No abstract

No abstract

No abstract

No abstract