Deformation Mechanisms Operating in TWIP/TRIP Steels Processed by Warm to Hot Working |
| V. Torganchuk, A. Belyakov, R. Kaibyshev
Belgorod State University, Pobeda 85, Belgorod, 308015, Russia |
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| The mechanical properties of medium to high-Mn austenitic TWIP/TRIP steels subjected to warm to hot working were studied. The steel samples were processed by plate rolling at various temperatures ranging from 500° to 1150°. The deformation microstructures depend significantly on the rolling temperature. The discontinuous dynamic recrystallization readily developed during hot rolling at temperatures of T≥800°, whereas the work hardened microstructures with high dislocation densities evolved by warm rolling at temperatures below 800°. The warm to hot rolling strengthened the steels remarkably. The ultimate tensile strength in the range of 750-1250 MPa and the corresponding yield strength of 300-900 MPa could be obtained by processing at designated temperature. |
DOI:10.12693/APhysPolA.134.640 PACS numbers: 81.40.Lm |