GP zone and metastable η′ formation during the early-stage precipitation of a 7050 Al alloy
aged at 121° C has been investigated using transmission electron microscopy, together with …

This paper describes the response of a precipitate microstructure to various types of non-
isothermal temperature changes, namely reversion, ramp heating and thermal cycles, met in …

In this work, a new four-stage aging treatment by employing a natural aging prior to re-aging
is designed to promote GP zones formation and subsequent shear-able strengthening effect …

The precipitation sequence in Al–Zn–Mg alloys has been subject to many revisions over the
years as more structural details of the early-stage Guinier-Preston (GP) zones and …

The aim of the investigation is to assess the microstructural features and associated
physical, mechanical and electrochemical properties of a 7017 Al–Zn–Mg alloy of various …

A study of the microstructural evolution of a commercial 7012 (Al–Zn–Mg–Cu) age-
hardenable alloy following artificial ageing by high resolution and conventional transmission …

The retrogression and re-aging (RRA) processes, aimed mainly at tailoring intergranular
precipitates, could significantly improve the corrosion resistance (ie, stress corrosion …

Fine-scale precipitation of the η′ phase and its precursors are essential for the mechanical
properties of Al-4.6 wt% Zn-1.2 wt% Mg alloy. This paper deals with an investigation of …

The tensile properties and fatigue behavior of an Al–Zn–Mg–Cu alloy were investigated by
performing tensile tests and fatigue crack propagation (FCP) tests. The tensile results show …

Secondary ageing of age-hardenable aluminium alloys occurs at temperatures below the
solvus of GP zones after a preliminary ageing at a higher temperature. The phenomenon …