Hot deformation characteristics and dynamic recrystallization mechanisms of a Co–Ni-based superalloy

Constitutive modelling of hot deformation behaviour of metallic materials

“…Although only the flow stress of 42CrMo is used to validate and compare the prediction accuracy, its testing results are representative and typical for the hot deformation behaviour of most metals. In the published literature, most metallic materials, such as steel [2,33,[35][36][37], aluminium alloys [38][39][40][41][42], magnesium alloys [43][44][45], titanium alloys [46][47][48][49], superalloys [50][51][52][53], are similar in flow stress curves and variation trends under tension [39,54], compression [55,56] and torsion [2,57] at hot deformation when DRX occurs. The typical representation of the hot deformation behaviour of metals at a certain temperature and strain rate can be summarised in Fig.…”

Subdivision of Dynamic Recrystallization Mechanism in the Transition Zone and Microstructure Evolution of Incoloy825 Alloy

“…This is also called TDRX. [23,53] Figure 17e shows a schematic diagram of twins promoting DRX. First, the twin boundary in the original grain appears the alternating interface of HAGB and twin boundary under the stress driven.…”

Thermal Deformation Behavior and Microstructure Evolution of GH4151 Alloy

“…An optimum hot‐working window with full DRX is established, taking into account both alloy deformation and organization transformation to avoid machining danger zones. [ 24 ] Excellent alloy properties can be obtained by adjusting the temperature and strain rate of the optimum window to maximize the DRX ratio, while also obtaining uniform, fine recrystallized grains. [ 25 ]…”