The high temperature creep of ordered and disordered MgCd

✍ Scribed by A.J.R. Soler-Gomez; W.J.McG. Tegart

• Publisher: Elsevier Science
• Year: 1964
• Weight: 440 KB
• Volume: 12
• Category: Article
• ISSN: 0001-6160
• DOI: 10.1016/0001-6160(64)90165-8

✦ Synopsis

It is known from a random walk consideration that for a f.c.c. lattice the mean time of stay ri of each component will be SP" z ?-' = y$q where 11, is the alloy self diffusion coefficient for the component i a.nd fi t'he Bardeen and Herringf6) correlation factor. T_~~ and 7cd values for the 24.3 and 29.3% alloys were calculated by using the diffusion data of Sclloen(5) as obtained from Manning's curves.(i) The correlation factors obtained by Manningc7) were used t,o calculate ri at various temperatures assuming that the temperature dependence of f'i is not very significant. The 7, values thus obtained are also plotted in Fig. 1 and Fig. 2 for the above two alloys. In the figures a very good agreement is seen between 7, (relaxation) and 7Cd, the mean time of stay of the faster diffusing cadmium. It is inferred that the anelastic relaxation, like the diffusion process, is also controlled by the movement of the faster moving component and is thus in agreement, with the conclusion drawn by Turner and Williams.(2) I wish to express my sincere thanks to Prof. B. N. Srivastava, DSc., F.N.I.. for valuable suggestion and discussions.