Impact Toughness of Selected Precipitation Hardening Aluminium Alloys
摘要
The impact toughness of a few selected precipitation hardening aluminium alloys that have potential for vehicle armour applications is reported for the first time. It is observed that although the impact toughness is considerably higher in the solution heat-treated condition, it degrades with artificial ageing. The formation of weak grain boundaries in the artificially aged tempers is the major cause of poor impact toughness in these alloys. The impact toughness of commercially purity aluminium is reported for the first time within the context of the present work.