The Examination of the Aluminum Alloy 7017 as a Replacement for the Aluminum Alloy 7039 in Lightweight Armor Systems
Technical Report,01 Aug 2014,30 Nov 2015
US Army Research Laboratory Aberdeen Proving Ground, United States
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The aluminum alloy AA 7039 has been recognized as a serviceable armor plate alloy for years. However, the inherent stress corrosion cracking susceptibility of AA7039 has led to a need for a replacement. AA7017 aluminum-zinc-magnesium was created as a slightly stronger and more corrosion-resistant version of AA7039 for use in ground vehicle applications. Ballistic impact experiments evaluated the plates ability to resist penetration under high-strain-rate loading. These experiments provide a gauge of penetration resistance for aluminum used in ground vehicle applications. This report focused on the dynamic investigation of 12.7- through 101.6-mm 0.5- through 4.0-inch-thick plates, assessment of the penetration resistance, and the selection of a penetrative baseline for potential future 7000 series aluminum alloys.