Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1607906 | Journal of Alloys and Compounds | 2016 | 7 Pages |
•Two types of precipitation are monitored upon cooling of an AA2618 Al–Cu–Mg alloy.•Precipitation above 300 °C occurs at cooling rates lower than ca. 17 K/s.•Below ca. 300 °C, Cu–Mg hardening clusters form upon cooling at 0.03–100 K/s.•The precipitation domains in AA2618 are summarised on TTP and CCP diagrams.•The importance of hardening is highlighted for quench-induced stresses prediction.
The precipitation of an AA2618 Al–Cu–Mg alloy is monitored during isothermal holdings and continuous coolings. The Time-Temperature-Property and Continuous-Cooling-Precipitation diagrams of AA2618 are obtained using in-situ resistivity and differential scanning calorimetry respectively. The two precipitation domains observed at high temperature and low temperature (<300 °C) are discussed with regard to their influence on the mechanical properties during quenching of large components.
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