Showing papers by "Kouichi Maruyama published in 1979"
01 Jan 1979
TL;DR: In this article, a theoretical equation to evaluate the steady-state creep-rates, ˙s, based on a recovery creep model is derived: ǫsαrσα2λ2, where r is the recovery rate, which can be determined from results of stress-reduction tests, σα the applied stress, and X the dislocation link-length.
Abstract: SYNOPSIS A theoretical equation to evaluate the steady-state creep-rates, ɛ˙s, based on a recovery creep model is derived: ɛ˙sαrσα2λ2, where r is the recovery rate, which can be determined from results of stress-reduction tests, σα the applied stress, and X the dislocation link-length. Two cases of recovery are considered, i. e., recovery of dislocation networks at sub-boundaries and that of three-dimensional networks within subgrains. The high-temperature steady-state creep of Fe-Mo solid solutions, creep characteristics of which have been reported to be well rationalized as viscous glide creep, is analyzed using this equation. It is shown that stress dependence of λs is well explained from the viewpoint of recovery, in which the activation and the annihilation of dislocations at sub-boundaries are considered to take place.