(華南理工大學 機電工程學院， 廣州 510640)
摘 要: 提出了一種制備梯度材料的雙流澆注連續(xù)鑄造新方法，采用該方法在自制的半連續(xù)鑄造裝置上進行了AlCu/Al梯度合金的探索試驗。分析了制備合金的組織和性能特點。結(jié)果說明：采用半連續(xù)鑄造方法在Al-Cu系合金中可以實現(xiàn)合金成分隨鑄件橫截面的連續(xù)梯度變化； 合金的成分、顯微組織和力學性能之間有較好的對應(yīng)關(guān)系。
關(guān)鍵字: 半連續(xù)鑄造; AlCu/Al；梯度材料
semi-continuous casting
WU Yuan-biao，SHAO Ming
（School of Mechano-eletronic Engineering,
South China University of Technology, Guangzhou 510640, China）
Abstract:A method of producing gradient material by continuous casting using double-stream-pouring technique was proposed. An experimental study of AlCu/Al gradient material was carried out on self-made semi-continuous apparatus. The microstructure and property of the alloy was analyzed. The results show that the continuous gradient distribution in composition across the cross section of the ingot can be realized in Al-Cu alloy system using the proposed method, and the microstructure, Rockwell hardness and the composition of the alloy are in good accordance with each other.
Key words: semi-continuous casting；AlCu/Al；gradient material
