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中文摘要：
采用光学显微镜（OM）、扫描电镜（SEM）、透射电镜（TEM）、X射线衍射和室温拉伸研究固溶制度对1933铝合金自由锻件组织和力学性能的影响。结果表明：由于Al，Zr粒子对晶界的钉扎作用，在470℃以下固溶时，合金的再结晶程度很低（〈15％）；随着固溶温度升高，再结晶程度逐渐上升；510℃固溶时，合金的再结晶程度显著增大（约为48％）；1933铝合金锻件中第二相主要有A17Cu2Fe相和η相；合金经470℃固溶60min后，η相溶解比较充分，此后随温度升高或时间延长第二相变化不大；合金的最佳固溶制度为470℃、60min，在此条件下合金具有最好的力学性能。
英文摘要：
The effects of solution treatment on microstructures and properties of the aged 1933 aluminum alloy forgings were investigate by optical microscopy （OM）, scanning electron microscopy （SEM）, transmission electrical microscopy （TEM）, X-ray diffractometry and tensile testing. The results show that the recrystallization fraction is very low （〈 15%） when the temperature is below 470 ℃ due to the pinning effect on grain boundaries of Al3Zr dispersoids. When the forgings are treated at 510℃, the recrystallization fraction increases significantly to about 48%. The main phases in this alloy are A17Cu2Fe and η phases. The second phases don＇t change obviously with increasing temperature and time because the η phase is dissolved almost completely after solution treatment at 470℃ for 60 min. The best solution treatment for 1933 alloy forgings is 470℃, 60 min, and the alloys under these conditions have the best tensile properties.
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