Mechanical properties of hot rolled 2519 aluminum alloy plate

来源期刊：中国有色金属学报(英文版)2003年第3期

论文作者：彭大暑 陈险峰 林启权 张辉

文章页码：553 - 557

Key words：2519 aluminum alloy; stress corrosion cracking sensitivity; strength; elongation; temper

Abstract: The effects of differences of temper on mechanical properties of T6, T7 and T8 plates of aluminum alloy 2519 were studied. The stress corrosion cracking(SCC) sensitivity was evaluated with parameters such as K_σ and K_δ.Tensile tests were divided into two groups: one was performed on tensile specimens without pre-corrosion, the other was performed on tensile specimens which were pre-corroded in 3.5%NaCl+1%H₂O₂ solution at 25℃.The results show that SCC resistance of alloy 2519 ranks in the order of T8>T7>T6 and the mechanical properties rank in the order of T6>T8>T7. SEM fractographs of the failed specimen show that the SCC sensitivity can be determined by the distribution of the second phase particles and size and the shape of grains in the alloy.