Effects of pre-stretching and ageing on the strength and fracture toughness of aluminum alloy 7050

Effects of pre-treatments on aging precipitates and corrosion resistance of a creep-aged Al–Zn–Mg–Cu alloy

“…Generally, the mechanical properties and corrosion resistance of Al-Zn-Mg-Cu alloys are closely related to microstructures, which are greatly affected by the thermo-mechanical processing [10][11][12]. In the past, some investigations have been carried out to study the relationships between the heat treatments, microstructural evolution and properties of Al-Zn-Mg-Cu alloys [13][14][15][16][17][18][19][20][21][22][23][24]. Liu et al [13] found that the cooling aging treatment can improve the mechanical properties and corrosion resistance of Al-8.35Zn-2.5Mg-2.25Cu alloy.…”

The effects of aging treatment and strain rates on damage evolution in AA 6061 aluminum alloy in compression

“…The damage evolution in aluminum alloys under mechanical loading can be strongly dependent on aging condition and strain rates. For instance, Han et al [1] reported that a subsequent aging of a peakaged AA 7075 aluminum alloy at a lower temperature results in an 8% increase in its fracture toughness. On the other hand, a secondary aging of AA 8090-T8 alloy at a lower temperature resulted in a decrease in fracture toughness [2].…”

Study on the Microstructure and Mechanical Properties of 20 Steel Strain Aging

“…M. Li studied avoiding and eliminating strain aging embrittlement by heat treatment methods commonly used in engineering [3]. N. Han et al [4] and M. Chemingui et al [5] studied the effect of stretching and aging on the microstructure of 7050 aluminum alloy and Al-Zn-Mg alloy by optical microscopy, scanning electron microscopy and transmission electron microscopy. A. Vasilyev et al [6] revealed that the strain aging behavior of ultra-low carbon bake hardened steels in industrial production was the pinning of the gap atoms to dislocations.…”