Al-4.5Cu合金半固态坯料制备研究
Preparation Process for Semi-solid Slurry of Al-4.5Cu Alloy
谢世坤， 易荣喜， 邓晓春， 艾永平
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作者单位：井冈山大学 工学院，江西 吉安 343009
中文关键字：Al-4.5Cu合金； 稀土Ce； 斜坡振动； 微观组织
英文关键字：Al-4.5Cu alloy; rare-earth Ce; slope vibration; microstructure
中文摘要：研究了稀土Ce对铝铜合金微观组织的影响以及Al4.5Cu合金半固态坯料的制备工艺。实验表明：在Al-4.5Cu合金中加入稀土Ce，细化了合金的微观组织，固液两相区间变窄，改善了合金的凝固性能。浇注温度和浇注方式对合金坯料制备也有明显的影响。在700℃采用斜坡振动铜模水冷浇注可制备性能优良的稀土Al-4.5Cu半固态坯料，其组织为细小均匀的等轴球状晶，且制备工艺简单。
英文摘要：The influence of rare-earth Ce on Al-Cu alloy microstructure was discussed, and the preparation process for semi-solid slurry of Al-4.5Cu alloy was researched. The experiments show that adding Ce element into Al-4.5Cu alloy refines the grain of the alloy, the solid-liquid two-phase range gets narrow, and the alloy's solidification capability improves. Pouring temperature and casting methods also play a significant role in the preparation process of Al-4.5Cu. Slope vibration of water-cooled copper mold casting at 700℃ can be used to prepare excellent RE Al-4.5Cu semi-solid slurry, its microstructure is uniform, small equiaxial crystal, and its process is simple.