材料与冶金学报2017，Vol.16Issue(3)：206-211,6.DOI:10.14186/j.cnki.1671-6620.2017.03.010
电磁搅拌方式对A356铝合金凝固组织形貌分形维数的影响
Effect of the way of electromagnetic stirring on fractal dimension of solidified microstructure of A356 aluminum alloy
摘要
Abstract
The fractal dimension of fractal geometry was used to quantitatively characterize the size and the spheroidization degree of the primary phase of the semi -solid aluminum alloy after the low over heat casting and electromagnetic stirring. Effect of the way of electromagnetic stirring on the fractal dimension of the primary phase morphology in the alloy was investigated by the OM and the morphologies fractal characteristics of α-Al of semi-solid primary phases was studied,by using the matlab software platform. The results showed that the solidified structure of the alloy has fractal characteristics, which can be quantified by the fractal dimension of its grain size refinement and the degree of spheroidization. The morphological fractal dimension of the primary phase changes with the stirring ways. The fractal dimension of the primary phase is the smallest when the bidirectional stirring is used. In this case the degree of grain refinement is the best.关键词
A356铝合金/电磁搅拌/凝固组织/分形维数Key words
A356 aluminum alloy/electromagnetic stirring/solidified structure/fractal dimension分类
矿业与冶金引用本文复制引用
陈涛,刘政,孙梦桐,陈志平..电磁搅拌方式对A356铝合金凝固组织形貌分形维数的影响[J].材料与冶金学报,2017,16(3):206-211,6.基金项目
国家自然科学基金项目 (No. 51144009) 和 (No. 51361012) （No. 51144009）
江西省自然科学基金项目 (No. 20142bab206012) 和江西省教育厅科技项目 (No. GJJ14407) 资助. （No. 20142bab206012）
