Recovery Processes and Ordering in Ni3Al
- 1 September 1967
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 38 (10), 3894-3900
- https://doi.org/10.1063/1.1709036
Abstract
Isothermal changes in long‐range order S, x‐ray line shifts due to stacking faults Δ, and x‐ray particle size from Fourier analysis of line shapes D were measured for filed samples of Ni3Al. Recovery temperatures between 200° and 270°C were investigated. The recovery of all three measured properties appeared to depend upon the mobility of vacancies in this temperature range. The evaporation of vacancies from faulted loops appeared to supply the vacancy flux for ordering and particle‐size changes. Fault shrinkage was found to cease quite abruptly between 215° and 200°C; at 200°C faulting initially increased, during which ordering did not occur, but after some 20 h the faulting began to anneal out and somewhat later ordering proceeded. An activation energy of 1.65 eV was found for the ordering reaction; this compares with a value of 1.5 eV for Emv in nickel.Keywords
This publication has 16 references indexed in Scilit:
- The thermal annealing of heavy ion damage in copperPhilosophical Magazine, 1966
- The nature of dislocation loops in quenched aluminiumPhilosophical Magazine, 1966
- Lattice defects in neutron irradiated αCu solid solution alloysPhilosophical Magazine, 1966
- Contrast from large prismatic dislocation loopsPhilosophical Magazine, 1966
- Radiation‐induced point defect clusters in copper and goldPhysica Status Solidi (b), 1966
- Die Stabilität von Stapelfehlertetraedern in abgeschreckten kubisch‐flächenzentrierten Metallen und LegierungenPhysica Status Solidi (b), 1962
- Direct observations of the annealing of prismatic dislocation loops and of climb of dislocations in quenched aluminiumPhilosophical Magazine, 1960
- Stacking faults in face-centred cubic metals and alloysPhilosophical Magazine, 1957
- Atomic Mobility in a Cu-Al Alloy after Quenching and Neutron IrradiationPhysical Review B, 1956
- Stacking faults in cold worked alpha-brassActa Metallurgica, 1955