Investigation on the Effect Factors and Rule for Deformation Process of Bulk Amorphous Alloy in Supercooled Liquid Region
Analytical solution of lamellar fluid flow in 3D structure is used to discuss the viscous flow behavior of bulk amorphous alloy in the supercooled liquid region. It shows the similar result to that of lamellar fluid flow in 2D structure, which describes the ratio of the flowed depth of the alloy to the feature size, the width of the channel in 2D model and the diameter of the pipe in 3D model, is dependent on time, pressure and viscosity of alloy. As a key parameter for interface study, shear stress on the wall between the alloy and pipe is investigated in the work. The result shows that the stress is also related with time, pressure and viscosity of alloy when the surface tension is not considered. Based on analyze mathematical expression of the index of microformability for bulk amorphous alloy in the supercooled liquid region, the material is characterized by an absence of size effect due to its fluid-like nature on physics. It is an ideal candidate for microforming. Effect factors are presented in an example and the relationship between effect factors with feature size is discussed.
Viscous Flow Feature Size Bulk Amorphous Alloy Supercooled Liquid Region
M.Cheng R.X.Wang S.H.Zhang
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
国际会议
2nd Asian Workshop on Macro/Nano Forming Technology(AWMFT-2009)(第2届亚洲微米纳米技术研讨会)
长沙
英文
644-646
2009-10-25（万方平台首次上网日期，不代表论文的发表时间）