Rheological behavior of semi-solid Mg₂Si/AM60 magnesium matrix composites at steady state

来源期刊：中国有色金属学报(英文版)2010年第z3期

论文作者：胡勇 何柏林 闫洪

文章页码：883 - 887

Key words：rheological behavior; Mg₂Si; semi-solid; magnesium matrix composite; apparent viscosity

Abstract: The microstructure and rheological behavior of semi-solid Mg₂Si/AM60 magnesium matrix composite at steady state were investigated. The results show that the primary α-Mg phases are knapped by mechanical stirring and the Chinese script type reinforced Mg₂Si phases exist in liquid phase and grain boundary. The analysis of apparent viscosity indicates that the apparent viscosity of semi-solid Mg₂Si/AM60 magnesium matrix composite at steady state increases with increasing the volume fraction of Mg₂Si and solid fraction of primary α-Mg, but decreases with increasing the shearing rate and shearing time, and the apparent viscosity keeps stable when shearing time reaches 300 s.

基金信息：the National Natural Science Foundation of China