Quench sensitivity of aluminium alloys : analysis of the kinetics and nature of quench induced precipitation For aluminium alloys precipitation strengthening is controlled by age hardening heat treatments including solution treatment quenching and ageing. Quenching is considered a critical step because detrimental quench induced precipitation must be avoided to exploit the full age hardening potential of the alloy. This work presents a comprehensive report on the solid solid phase transformation kinetics in Al alloys covering to a vast extent quench induced precipitation during continuous cooling over a dynamic cooling rate range of ten orders of magnitude.<eng>