Abstract
In this investigation, the authors tried to improve the elevated temperature properties, in particular, creep rupture strength of the fully ferritic steel by employing the technique of dispersion strengthening. As a result, it was found that the sintered alloy steels with dispersed fine T-A12O3 particle, especially those obtained by the technique of the liquid phase sintering and the hot-working after sintering, have higher creep rupture strength than those of the wrougth steels having nearly the same compositions, and that these dispersion strengthened steels are promising as a new type of heat resisting material.
