Deformation mechanisms operating in TWIP/TRIP steels processed by warm to hot working

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 ◦C to 1150 ◦C. The deformation microstructures depend significantly on the rolling temperature. The discontinuous dynamic recrystallization readily developed during hot rolling at temperatures of T ≥ 800 ◦C, whereas the work hardened microstructures with high dislocation densities evolved by warm rolling at temperatures below 800 ◦

Improving mechanical properties of 18%Mn TWIP steels by cold rolling and annealing

The microstructures and mechanical properties of Fe-0.4C-18Mn and Fe-0.6C-18Mn steels subjected to large strain cold rolling followed by annealing werestudied. Cold rolling with a total reduction of 86% resulted in substantial strengthening at expense of plasticity. The yield strength and the ultimate tensile strength of above 1400MPa and 1600MPa,respectively,were achieved in both steels, whereas total elongation decreased below 30

Grain sizes and dislocation densities in fcc-metallic materials processed by warm to hot working

Our just received results on the deformation microstructures evolved in a mediumMn austenitic steel during large strain warm to hot rolling were analyzed with a reference to other alloys with face centred cubic lattices and relatively low stacking fault energies. The structural changes were characterized by the development of dynamic recovery (DRV) and dynamic recrystallization (DRX). The deformation grain size decreased while the dislocation density increased with a decrease in deformation temperatur

Effect of rolling temperature on microstructure and mechanical properties of 18%Mn TWIP/TRIP steels

The microstructure and mechanical properties of Fe-18Mn-0.6C and Fe-18Mn-0.4C steels subjected to rolling with a total reduction of 60% at temperatures of 773 K to 1373 K were investigate

Effect of warm to hot rolling on microstructure, texture and mechanical properties of an advanced medium-Mn Steel

The deformation microstructures and mechanical properties were studied in a medium-Mn austenitic steel subjected to warm-to-hot rollin

Deformation behavior of high-mn TWIP steels processed by warm-to-hot working

The deformation behavior of 18%Mn TWIP steels (upon tensile tests) subjected to warm-to-hot rolling was analyzed in terms of Ludwigson-type relationship, i.e., a = K\ e”1 + exp(K - ”2 e). Parameters of Ki and ” depend on material and processing conditions and can be expressed by unique functions of inverse temperatur

Hot deformation and dynamic recrystallization of 18%mn twinning-induced plasticity steels

The deformation behavior of 18%Mn twinning-induced plasticity (TWIP) steels with 0.4%C or 0.6%C is studied by means of isothermal compression tests in the temperature range of 973-1373 K at the strain rates of 10³-10¹ s¹. The hot working is accompanied by the development of discontinuous dynamic recrystallization (DRX), which is commonly advanced by an increase in deformation temperature and/or a decrease in strain rate. A decrease in the carbon content promotes the DRX development, though the flow stresses scarcely depend on the carbon conten

Microstructure and mechanical properties of medium manganese steel after different deformation and thermal treatments

An analysis is performed of the effect deformation and thermal treatment have on the structural phase state and mechanical properties of promising sparingly alloyed Fe-10Mn-0.2C medium manganese steel. The range of temperatures of the two-phase region with a high volume content of the austenite phase is determine

Effect of rolling temperature on microstructure and mechanical properties of 18%Mn TWIP/TRIP steels

The microstructure and mechanical properties of Fe-18Mn-0.6C and Fe-18Mn-0.4C steels subjected to rolling with a total reduction of 60% at temperatures of 773 K to 1373 K were investigate

Deformation behavior of high-mn TWIP steels processed by warm-to-hot working

The deformation behavior of 18%Mn TWIP steels (upon tensile tests) subjected to warm-to-hot rolling was analyzed in terms of Ludwigson-type relationship, i.e., a = K\ e”1 + exp(K - ”2 e). Parameters of Ki and ” depend on material and processing conditions and can be expressed by unique functions of inverse temperatur