On the role of precipitates in controlling microstructure and mechanical properties of Ag and Sn added 7075 alloys during artificial ageing

Development of ultrafine grained Al–Zn–Mg–Cu alloy by equal channel angular pressing: microstructure, texture and mechanical properties

“…2b) [13] with a size in the range of 190-220 nm and (ii) spherical particles with a diameter in the range of 40-82 nm. The TEM based EDS analysis revealed the presence of Mg and Zn in the precipitates, indicating a possible presence of MgZn 2 particles [25]. The presence of small amount of Cu can also be noticed in Fig.…”

“…The glissile dislocations now face more hindrance from newly formed dislocations and grain boundaries along with the already existed grain boundaries. The presence of fine dispersed MgZn 2 precipitates also effectively pin the grain boundaries and dislocations movement [25]. As deformation progressed during ECAP, fragmentation of said precipitates also contributed to overall strengthening by restricting dislocation motions [9,[40][41][42].…”

“…Recently, high-strength 7075 aluminium alloys have gained momentum in the field of automobile, aircraft, marine and general structural engineering applications, owing to their high strength, low density, high fracture toughness, and excellent corrosion-resistance properties at ambient temperature [23][24][25]. Among the numerous researchers, the authors took the privilege to refer the work of Esmaeilia [23], Zhao [24], and Ghosh [25] and their co-workers to efficiently mention the utility of 7075 alloy.…”

“…Recently, high-strength 7075 aluminium alloys have gained momentum in the field of automobile, aircraft, marine and general structural engineering applications, owing to their high strength, low density, high fracture toughness, and excellent corrosion-resistance properties at ambient temperature [23][24][25]. Among the numerous researchers, the authors took the privilege to refer the work of Esmaeilia [23], Zhao [24], and Ghosh [25] and their co-workers to efficiently mention the utility of 7075 alloy. It was well reported by Zhao [24], Ghosh [25], Islamgaliev [26] and Zhenga et al [27] and associated researchers that heat-treatable Al alloys can be strengthened through the solid solution and precipitation hardening by selecting an appropriate heat treatment cycle.…”

“…Among the numerous researchers, the authors took the privilege to refer the work of Esmaeilia [23], Zhao [24], and Ghosh [25] and their co-workers to efficiently mention the utility of 7075 alloy. It was well reported by Zhao [24], Ghosh [25], Islamgaliev [26] and Zhenga et al [27] and associated researchers that heat-treatable Al alloys can be strengthened through the solid solution and precipitation hardening by selecting an appropriate heat treatment cycle. It was shown that conventional age-hardening could be combined with SPD, as shown by Vaseghi et al [28], as they reported the distribution of fine nano-sized precipitates dispersed in a UFG microstructure after age hardening.…”