Effects of pre-deformation mode and strain on creep aging bend-forming process of Al−Cu−Li alloy

Quantification of the Effect of Increased Pre‐Deformation on Microstructure and Mechanical Properties of 2A55 Al–Li Alloy

“…For instance, creep aging can significantly improve alloy hardness, strength, elongation, and corrosion resistance. [6,7] Double aging treatment was developed to ameliorate the strength, toughness, and ductility of Al alloys. [8] Furthermore, the combination of heat treatment in the form of double and triple aging had been invented to accelerate the aging response of Al-Li alloys.…”

The Effect of Temperature on the Creep Ageing Characteristics of Al-Li Alloys

“…In recent years, researchers have studied the changes in the microstructure of Al alloys during creep aging process by means of characterisation techniques such as TEM, revealing the relationship between microstructure and creep properties, which in turn has promoted the development of CAF [6][7][8][9]. Dong [10] et al and Tang [11] et al evaluated the effect of predeformation on the creep ageing process of Al alloys and showed that the increase in pre-deformation strain can promote the ageing precipitation process and improve the tensile properties, Kahn tearing properties and fatigue extension properties of the formed alloy at room temperature; at the same time, increasing predeformation will bring a large number of dislocations to the lattice, which can be detached from the pinning effect of the reinforced precipitates under the stress field, promoting creep strain and improving creep strength. Yang [12] et al found that 5% and 7% strain improved creep strain, with reversal occurring when the strain went to 9%.…”