Investigation of rheo-diecasting mold filling of semi-solid A380 aluminum alloy slurry
来源期刊：International Journal of Minerals Metallurgy and Materials2017年第6期
论文作者：Zhi-yong Liu Wei-min Mao Zhi-kai Zheng Rui Yue
文章页码：691 - 700
摘 要：The rheo-diecasting mold filling capacity and the microstructure of the semi-solid A380 aluminum alloy slurry were investigated. The results show that the mold filling capacity was strengthened with increasing pouring temperature or increasing injection pressure. Under certain process parameters, the mold cavity was fully filled. However, the mold filling capacity decreased with increasing holding time. The mold filling capacity was improved with increasing shape factor of primary α（Al） grains; however, the solid fraction and the grain size significantly increased at the same time. In addition, the microstructures along the route of the spiral samples obviously differed. The grain size decreased gradually from the near-end to the far-end, whereas the shape factor increased gradually.
Zhi-yong Liu1，Wei-min Mao2，Zhi-kai Zheng2，Rui Yue4
1. School of Materials Science and Engineering, Tsinghua University2. School of Materials Science and Engineering, University of Science and Technology Beijing4. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University
摘 要：The rheo-diecasting mold filling capacity and the microstructure of the semi-solid A380 aluminum alloy slurry were investigated. The results show that the mold filling capacity was strengthened with increasing pouring temperature or increasing injection pressure. Under certain process parameters, the mold cavity was fully filled. However, the mold filling capacity decreased with increasing holding time. The mold filling capacity was improved with increasing shape factor of primary α（Al） grains; however, the solid fraction and the grain size significantly increased at the same time. In addition, the microstructures along the route of the spiral samples obviously differed. The grain size decreased gradually from the near-end to the far-end, whereas the shape factor increased gradually.
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