Al-1%Si单晶制备工艺及微观组织分析

Preparation and microstructure analysis of Al-1%Si single crystal

摘要: 在自制的真空熔炼、氩气保护下拉式连续定向凝固设备上成功制取了具有单晶组织的φ8mm Al-1%Si合金棒材,并对其组织演变过程及稳定性进行了研究.分析了定向凝固过程中,硅颗粒在单晶组织中的分布形态,提出了使硅固溶或弥散均匀分布于铝基体中的措施.

Abstract: An Al-1%Si bar with 8 mm in diameter and single crystal was made with self-made vacuum vertical continuous unidirectional casting equipment. The microstructure evolution and stability during continuous unidirectional solidification were studied. The Si distribution of particles in Al matrix was analyzed and a method was proposed that can make Si diffuse in Al homogeneously.