Effects of solid deformation and melt vibration on structure and refining performance of Al5Ti1B master alloy

来源期刊：中国有色金属学报(英文版)2000年第1期

论文作者：亓效刚 刘相法 边秀房 王大庆 马家骥

文章页码：80 - 83

Key words：Al5Ti1B master alloy; solid deformation; melt vibrationDocument code: A

Abstract: Grain refinement can offer significant benefits to both continuous casting and cast-to-shape products, and Al5Ti1B master alloy containing mainly TiAl₃ and TiB₂ particles in Al matrix has been proven to perform well for giving the best refinement, but the working method of adding Al5Ti1B rod to the furnace during casting are often related to solid deformation, and melt vibration may help to reduce the size of TiAl₃ and improve the distribution of TiB₂. Therefore the effects of solid deformation and melt vibration on the structures and refinement performance of Al5Ti1B master alloys were studied. The experimental results show that both solid deformation and melt vibration can improve the distribution of TiB₂ in Al5Ti1B master alloys, increase the interface energy and nucleation activity of TiB₂ particles. In the meantime, solid deformation can store deformation energy and melt vibration can break fragile plate-like TiAl₃ compounds. So both methods can improve the refinement effectiveness of Al5Ti1B master alloys.