A new approach to grain refinement of an Mg-Li-Al cast alloy

作者：Jiang B; Qiu D; Zhang M X^*; Ding P D; Gao L

来源：Journal of Alloys and Compounds, 2010, 492(1-2): 95-98.

DOI：10.1016/j.jallcom.2009.11.066

• Grain refinement
• Edge-to-edge matching model
• Mg-Li alloy
• Al-5Ti-1B master alloy

Crystallographic calculation based on the edge-to-edge matching model predicted that both TiB(2) and Al(3)Ti intermetallic compounds have strong potential to be effective grain refiners for beta phase in the Mg-14Li-1Al alloy due to the small atomic matching misfit across the interface between the compounds and beta phase. Experimental results showed that addition of 1.25 wt%Al-5Ti-1B master alloy reduced grain size of beta phase in the alloy from 1750 to 500 mu m. The possible grain refining mechanisms were also discussed.

• 出版日期2010-3-4
• 单位重庆大学