The Coarsening of Dendrite Arm Spacing during Solidification of Al-Cu-Mn Alloy
A secondary dendrite arm spacing coarsening model for multi-component alloy is proposed, where the back diffusion flux in solid is simplified by introducing the parameter of solute boundary layer,δi . The simplified model was applied to the predication of the secondary arm spacing of directional solidified Al-Cu-Mn alloy. The good agreement between the experimental results and the calculated lines shows that this simplified model is satisfactory for the prediction of dendrite arm coarsening during solidification in multi-component alloys.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Z. He "The Coarsening of Dendrite Arm Spacing during Solidification of Al-Cu-Mn Alloy", Advanced Materials Research, Vols. 239-242, pp. 2029-2033, 2011