Brinell-Hardness data (HBW 2.5/62.5) of aluminum alloy EN AW-2618A after different aging times and temperatures

Christian Rockenhäuser; Philipp von Hartrott; Birgit Skrotzki

doi:10.1016/j.dib.2022.108830

Brinell-Hardness data (HBW 2.5/62.5) of aluminum alloy EN AW-2618A after different aging times and temperatures

Data Brief. 2022 Dec 19:46:108830. doi: 10.1016/j.dib.2022.108830. eCollection 2023 Feb.

Authors

Christian Rockenhäuser¹, Philipp von Hartrott², Birgit Skrotzki¹

Affiliations

¹ Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
² Fraunhofer-Institut für Werkstoffmechanik (IWM), Wöhlerstraße 11, 79108 Freiburg, Germany.

Abstract

The article covers data on the Brinell hardness of the forged precipitation-hardened aluminum alloy EN AW-2618A in the initial T61 condition (i. e. slightly underaged) and after isothermal aging for up to 25,000 h at aging temperatures between 160 °C and 350 °C. In addition, the hardness was determined on specimens after creep testing at 190 °C and various stresses. The hardness decreases with increasing aging time due to the microstructural evolution of the hardening precipitates. The drop occurs faster the higher the aging temperature. Aging under creep load additionally accelerates the hardness decrease.

Keywords: Aging; Aluminum alloy; Brinell hardness; Creep; EN AW-2618A; Ostwald ripening; Reheating.