| 摘要 |
<p>Aluminum alloy plate having improved resistance against incoming kinetic energy projectiles, the plate having a gauge of 10 mm or more and the aluminium alloy having a chemical composition including, in weight percent: Mg 4.0 to 6.0, Mn 0.2 to 1.4, Zn 0.9 max., Zr< 0.3, Cr< 0.3, Sc< 0.5, Ti< 0.3, Fe< 0.5, Si< 0.45, Ag< 0.4, Cu<0.25, other elements and unavoidable impurities each <0.05, total <0.20, balance aluminium, and wherein the alloy plate is obtained by a manufacturing process including casting, preheating and/or homogenisation, hot rolling, a first cold working operation, an annealing treatment at a temperature of less than 350°C, followed by a second cold working operation.</p> |
