6061合金双向等通道挤压金属流动规律研究

Study on metal flow of 6061 aluminum alloy processed by Dual Equal Channel Extrusion

摘要:

摘 要: 采用数值模拟和实验验证的方法研究了双向等通道挤压过程金属流动规律，发现双向等通道技术能够在材料内部造成剧烈的剪切变形，具有晶粒细化和形变强化作用，可以通过调整摩擦系数对变形过程进行调控。6061合金A、B两种路径四道次双向等通道挤压发现，双向等通道具有强烈的形变强化作用，在相同道次下，B路径等效应变量大于A路径。

Abstract:

Abstract: Adopt the method of numerical simulation and experiment to study the metal flowing law in dual equal channel extrusion process ,dual equal channel extrusion technology can cause severe shear deformation within the material, lead to grain refinement and deformation strengthening effect, and the deformation process should be control by adjusting the coefficient of friction. By four passes extrusion 6061 Alloy within A, B path respective, dual equal channel extrusion has strong effetive strain, and at the same passes, path B have great strain strengthening ability than path A.