An investigation into the hot deformation characteristics of 7075 aluminum alloy

Hot ductility behavior of an extruded 7075 aluminum alloy

“…6e and f). The occurrence of DDRX has been previously reported at the same thermo-mechanical conditions during hot compression of aluminum alloys [17,28].…”

“…Accordingly, in industrial practices, the thermomechanical processing of such products is generally conducted at temperatures above the solvus temperature for two reasons: (a) to increase the plasticity in the absence of the second phase, and (b) to improve the mechanical properties of the final product by the subsequent aging of a supersaturated solid solution [16]. It is to note that the formability of 7075 aluminum alloy is highly sensitive to the occurrence of the restoration process (dynamic recovery and dynamic recrystallization), where the ductility increases noticeably upon stress relieving and the formation of new equiaxed fine grains [17]. However, it is worth mentioning that the Al-Zn-Mg-Cu alloys hold a very small processing window, as restrained by its high flow stress on one hand and by its low incipient melting point on the other [13].…”

Hot tensile deformation behaviors and constitutive model of an Al–Zn–Mg–Cu alloy

“…Recently, the hot deformation behaviors of Al-Zn-Mg-Cu alloys have been extensively studied based on hot torsion or compression experiments. Rokni et al [61] investigated the hot compression deformation behaviors and microstructural evolution of 7075-T6 aluminum alloy. Lin et al [62,63] proposed new phenomenological constitutive models to describe the hot compression deformation behaviors of Al-Zn-Mg-Cu alloy.…”

Dynamic behavior of a 6069 Al alloy under hot compression

“…Hot deformation behavior is related to strain-hardening and dynamic softening mechanisms. Dynamic recovery (DRV) and dynamic recrystallization (DRX) are important dynamic softening mechanisms for characterizing microstructures during the hot deformation of Al alloys [12][13][14][15][16]. Changes in the microstructure of Al alloys during hot deformation also influence their flow behavior, which is associated with their deformation mechanism and softening effect.…”