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近期研制成功的6013-T6铝合金板材已被美国海军选作P-7A飞机机身蒙皮板及一些其他应用件的材料,取代了以前惯用的2024-T3包铝板材。6013-T6合金具有很好的耐蚀性,这一点与老牌的同系合金6061相似,因此不用包铝。该合金的疲劳强度、疲劳裂纹扩展速率和断裂韧性均优于2024-T3的。用6013合金取代2024合金还能降低成形零部件的加工成本,因为6013合金易于在T4状态下成形,随后就可轻易地时效到T6状态,这样就避免了象2024合金那样昂贵的热处理及矫直工序。
Recently developed 6013-T6 aluminum alloy sheet has been selected by the US Navy as a P-7A aircraft fuselage skin panels and some other applications of materials, replacing the usual 2024-T3 aluminum package. 6013-T6 alloy has good corrosion resistance, which is the same with the old alloy 6061 similar, so do not wrap aluminum. The alloy’s fatigue strength, fatigue crack growth rate and fracture toughness are better than 2024-T3. Replacing the 2024 alloy with the 6013 alloy can also reduce the cost of forming parts because the 6013 alloy is easily shaped in the T4 state and can then be easily aged to the T6 state to avoid expensive heat treatments and straightening as the 2024 alloy Process.