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通过对 2 0 2 4铝合金在不同时效制度下硬度和导电率的测试及统计分析 ,提出了用于替代室温下自然时效的一种新时效制度 .对两种时效制度下的 2 0 2 4铝合金进行了拉伸、疲劳、腐蚀、疲劳裂纹扩展速率和扩展寿命的对比试验及统计分析 ,证明两种时效下的材料机械性能无显著差异 ,新时效制度的 2 0 2 4铝合金完全满足适航要求 .这种新时效制度可大大缩短飞机结构停场修理时间 ,给飞机维修公司和航空公司带来较高的经济效益 .
Based on the testing and statistical analysis of hardness and conductivity of 2 0 2 4 aluminum alloy under different aging regimes, a new aging regime for replacing natural aging at room temperature was proposed. Two aging regimes, 2 0 2 4 Aluminum alloy tensile, fatigue, corrosion, fatigue crack growth rate and extended life of the comparative test and statistical analysis showed that the mechanical properties of the materials under the two aging no significant difference, the new aging system of 2024 aluminum alloy fully satisfy Airworthiness Requirements This new system of amenity can greatly shorten the repair time of aircraft structures and bring high economic benefits to aircraft maintenance companies and airlines.