Dynamic measurement on infiltration process and formation mechanism of infiltration front

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 6; pp. 980 - 986
• Main Author: 齐乐华 徐瑞 苏力争 周计明 关俊涛
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2010; School of Mechatronics, Northwestern Polytechnical University, Xi'an 710072, China
• Subjects: Al2O3短纤维; Aluminum oxide; AZ91D; Computational fluid dynamics; Fluid flow; Infiltration; infiltration front; infiltration measurement; infiltration model; Magnesium base alloys; Mathematical models; Preforms; Process parameters; Short fibres; temperature field; 入渗过程; 动态测量; 测量装置; 渗透过程; 熔融合金; infiltration measurement; infiltration front; infiltration model; temperature field
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60245-4

An infiltration measurement device was developed to research the infiltration process of molten AZ91D magnesium alloy into the Al2O3 short fibre preform.The variation of relationship between the heights of measuring points and the time for molten alloy to reach the measuring points was illustrated.The effect of infiltration process parameters on the infiltration front was analyzed. It is found that pressure and pouring temperature are the most important factors which affect the infiltration velocity and composite quality.Furthermore,considering the influence of temperature field,an infiltration model of molten AZ91D into the short fibre preform was constructed on the basis of experimental results and Darcy’s Law.The analysis shows that the results predicted by this model are consistent with the experimental results.