Summary
The development of order below the critical temperature in fully disordered Cu3Au specimens is enhanced by quenched-in lattice vacancies. From the ordering rate and from the decrease in resistivity due to order the activation energies for vacancy formation (1.00±0.06) eV and for vacancy migration (0.72±0.06) eV are deduced. It is also noticed that the ordering process displays some anomalous features whenever the quenching temperature is above 600 °C.
Riassunto
Lo svilupparsi della struttura ordinata al disotto della temperatura critica, a partire da campioni di lega Cu3Au totalmente disordinati, risulta accelerato dalla presenza di vacanze reticolari introdotte mediante tempra. Le energie di attivazione per formazione e migrazione delle vacanze reticolari (rispettivamente (1.00±0.06) eV e (0.72±0.06) eV) vengono dedotte dai ritmi di ordinamento osservati e dalla decrescita di resistività dovuta allo stato di ordine. Vengono discusse alcune caratteristiche anomale del processo di ordinamento che si osservano qualora la temperatura di tempra sia superiore a 600 °C circa.
Similar content being viewed by others
Literatur
J. A. Brinkman, C. R. Dixon andC. J. Meechan:Acta Met.,2, 38 (1954).
H. Raether:Zeits. angew. Phys.,4, 53 (1952).
G. C. Kuczynski, M. Doyama andM. E. Fine:Journ. Appl. Phys.,27, 651 (1956).
A. C. Damask, Z. A. Fuhrman andE. Germagnoli:Journ. Phys. Chem. Solids,19, 265 (1961).
R. A. Dugdale:Phil. Mag.,1, 537 (1956).
M. C. Anquetil:Journ. Phys. Radium,23, 113 (1962).
E. Nagy andI. Nagy:Journ. Phys. Chem. Solids,23, 1605 (1962).
E. Nagy andH. Elkholy:Journ. Phys. Chem. Solids,23, 1613 (1962).
E. Nagy andJ. Toth:Journ. Phys. Chem. Solids,24, 1043 (1963).
B. M. Korevaar:Physica,25, 1021 (1959).
B. M. Korevaar:Acta Met.,9, 297 (1961).
M. T. Béal:Journ. Phys. Radium,23, 843 (1962).
A. C. Damask:Journ. Phys. Chem. Solids,1, 27 (1956).
J. B. Gibson:Journ. Phys. Chem. Solids,1, 23 (1956);M. T. Béal:Journ. Phys. Chem. Solids,18, 156 (1960).
P. Jongenburger:Appl. Sci. Research, B3, 237 (1953).
R. O. Simmons andR. W. Balluffi:Phys. Rev.,125, 862 (1962).
R. O. Simmons andR. W. Balluffi:Phys. Rev.,129, 1533 (1963).
M. S. Wechsler andR. H. Kernohan:Acta Met.,7, 599 (1959).
S. Yoshida andJ. S. Koehler:Acta Met.,8, 878 (1960).
W. Schüle, A. Seeger, F. Ramsteiner, D. Schumacher andK. King:Zeits. f. Naturfors.,16a, 323 (1961).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Benci, S., Gasparrini, G. & Germagnoli, E. The influence of quenched-in vacancies on the ordering rate of the Cu3Au alloy. Nuovo Cim 31, 1165–1175 (1964). https://doi.org/10.1007/BF02733589
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02733589