| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 245973 | Archives of Civil and Mechanical Engineering | 2009 | 10 Pages |
The high-manganese steels with the austenitic structure belong to a group of modern steels predicted to use in the automotive industry. The chemical composition of the steel containing 25% Mn, solution hardened by Si and Al was developed. Microadditions of Nb and Ti introduced into the steel creating stable nitrides and carbides should act by precipitation hardening and inhibit a grain growth of recrystallized austenite. The aim of the work was to determine the influence of various hot-working conditions on a structure of the investigated steel. The processes controlling work-hardening and removing strengthening after finishing the hot-working were identified. The preliminary upset forging by the use of eccentric press with a degree of deformation in a range of 20 to 60% and at temperatures of 850 and 1000 °C was carried out. On the basis of determined conditions the multi-stage axial compression tests ensuring the fine-grained austenite structure were performed.
