The precipitation hardening of a Al-Zn-Mg-Al<inf>2</inf>O<inf>3</inf>(p) composite is explored. It is found that the peak hardness achieved is almost double that of precipitation hardening of Al-Zn-Mg alloy or dispersion strengthening of Al-Zn-Mg with 5% Al<inf>2</inf>O<inf>3</inf>(p). Toughness is marginally improved and tensile strength is one and half times that of precipitation hardened Al-Zn-Mg alloys. The ageing time for peak hardness is reduced due to acceleration of formation of precipitate. © Indian Academy of Sciences.

Kiran, K.S.Srinivasan, K.2026-02-05PrecipitatBulletin of Materials Science, 1999, 22, 1, pp. 33-352504707https://doi.org/10.1007/BF02745673https://idr.nitk.ac.in/handle/123456789/280321999AluminaAluminiumCompositeDispersionHardnessPrecipitationStrengtheningToughnessThe precipitation hardening of a Al-Zn-Mg-Al<inf>2</inf>O<inf>3</inf>(p) composite is explored. It is found that the peak hardness achieved is almost double that of precipitation hardening of Al-Zn-Mg alloy or dispersion strengthening of Al-Zn-Mg with 5% Al<inf>2</inf>O<inf>3</inf>(p). Toughness is marginally improved and tensile strength is one and half times that of precipitation hardened Al-Zn-Mg alloys. The ageing time for peak hardness is reduced due to acceleration of formation of precipitate. © Indian Academy of Sciences.