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Al合金表层的缺陷常常会导致腐蚀发生。因此,采取保护措施以提高铝合金的抗腐蚀性能是非常重要的。从电化学的角度出发,对固溶、淬火和时效处理工艺进行优化,以提高铝合金的强度。在不同电位(-05～-1.8V)下进行慢应变速率拉伸实验。结果表明:与未经强化处理的铝合金相比,经固溶强化热处理的铝合金表现出高的最大拉伸强度、伸长率和断裂时间。由于经固溶强化处理的铝合金的伸长率增加,其拉伸断裂时间也随之增加。在电位-1.3～-0.7V范围内,样品具有优异的力学性能,因此,该电位范围被认为是该合金的腐蚀保护范围。
Al alloy surface defects often lead to corrosion. Therefore, it is very important to take protective measures to improve the corrosion resistance of aluminum alloy. From the electrochemical point of view, the solution, quenching and aging treatment processes are optimized to improve the strength of the aluminum alloy. Slow strain rate tensile test was performed at different potentials (-05 ~ -1.8V). The results show that the solution heat-treated aluminum alloy shows high maximum tensile strength, elongation and breaking time compared with the non-strengthened aluminum alloy. Due to the increase of the elongation of the solution treated aluminum alloy, the tensile fracture time also increases. The potential range of -1.3 ~ -0.7V, the sample has excellent mechanical properties, therefore, the potential range is considered to be the corrosion protection of the alloy range.