1979 Volume 43 Issue 2 Pages 93-96
The effects of quenching temperature on ordering in equiatomic CuPt alloy were investigated by means of electrical resistivity measurements during anisothermal annealing. The quenching temperature does not change three elementary processes of ordering, namely stage Ia(migration and annihilation of quenched-in excess monovacancies), stage Ib(annihilation of secondary defects) and stage II (migration of the thermal equilibrium vacancies). The higher the quenching temperature, the less the fractions of reaction in stage Ia. The decrease in stage Ia may be attributed to the concentration of quenched-in excess monovacancies. A divacancy in a locally ordered region has less mobility than a monovacancy.