Zn–0.8Mn alloy for degradable structural applications: Hot compression behaviors, four dynamic recrystallization mechanisms, and better elevated-temperature strength

Thermal Deformation Behavior and Dynamic Softening Mechanisms of Zn-2.0Cu-0.15Ti Alloy: An Investigation of Hot Processing Conditions and Flow Stress Behavior

“…However, as the strain rate increases to 10 s −1 , twinning dynamic recrystallization (TDRX) and CDRX are observed ( Figure 11 d). This indicates that twinning is generated during the thermal deformation process, and twins can form much easier than slip at a high strain rate (10 s −1 ), due to the highly effective interface velocity [ 13 ] of the twin. A twin boundary (TB) will hinder the dislocation motion, thus increasing the strain energy around the twinning and providing the driving force for the nucleation of TDRX on TB.…”

“…A twin boundary (TB) will hinder the dislocation motion, thus increasing the strain energy around the twinning and providing the driving force for the nucleation of TDRX on TB. Meanwhile, the high strain rate increases deformation inhomogeneity, making dislocation slip more difficult, which leads to a significant increase in flow stress ( Figure 2 c) and the weakening of DDRX [ 13 , 44 ].…”

“…The constitutive equations and the processing maps are important methods to study the hot workability characteristics and the deformation mechanisms of zinc-based alloys [ 12 , 13 ]. Unfortunately, the traditional Arrhenius equations and 2D processing maps cannot reflect the influence of strain, which has an obvious impact on flow stress [ 14 ].…”

Structural and temporal dynamics analysis of zinc-based biomaterials: History, research hotspots and emerging trends

“…Dynamic recrystallization can be categorized into discontinuous dynamic recrystallization (DDRX), continuous dynamic recrystallization (CDRX), twinning-induced dynamic recrystallization (TDRX), and particle-stimulated nucleation (PSN), and the variation in processing parameters can alter the DRX mechanism. The transition from DDRX to CDRX can be achieved by lowering the deformation temperature and increasing the strain rate, while low temperature and high strain rate can promote the activation of TDRX [ 110 ]. In addition to DDRX in the initial deformation stage and TDRX at intermediate and high strain rates, CDRX plays a dominant role in the compression of pure Zn at room temperature [ 111 , 112 ].…”