Microstructure and mechanical properties of Al-Si eutectic alloy modified with Al-3P master alloy

作者：Wang, Shuo; Fu, Min; Li, Xiazhang; Wang, Jianhua^*; Su, Xuping

来源：Journal of Materials Processing Technology, 2018, 255: 105-109.

DOI：10.1016/j.jmatprotec.2017.12.008

• Eutectic Al-Si alloy
• Microstructure
• Mechanical properties
• Modification

The fraction of primary Si and primary alpha-Al in Al-Si eutectic alloy were largest after modification at 740 degrees C when a certain amount of Al-3P was added. The fraction of primary Si and primary alpha-Al in Al-Si eutectic alloy first increased and then decreased with increasing amount of Al-3P. The fraction of primary Si and primary alpha-Al in the Al-Si eutectic alloy was largest when the added amount of Al-3P modifier was 0.4wt.%. The fraction of primary Si and primary alpha-Al decreased with further increased Al-3P modifier. The size of the primary Si decreased continuously. Compared to the unmodified Al-Si eutectic alloy, the tensile strength and elongation of the alloy modified with 0.4wt.% Al-3P at 740 degrees C increased by 7% and 74%, respectively.

• 出版日期2018-5
• 单位常州大学