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Effect of Die Entry Angle on Extrusion Responses of Aluminum 6063 Alloy

机译:模具进入角对6063铝合金挤压性能的影响

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Mechanical properties response of extruded 6063 aluminum alloy at varied die entry angle has been investigated. Plain carbon and tool steel dies with entry angles of 15o, 30o, 45o, 60o, 75o and 90o were simulated. Extrusion on the alloy was done at ambient temperature (37oC) and the extruded samples from the various angles were subjected to selected service related mechanical tests and microstructural analysis. Results show that maximum extrusion pressure and extrudate hardness increase with increasing die entry angle. Contribution to extrusion pressure increase may have come from obtuse changes in the extrudates’ crystal slip system in relation to extrusion direction. Improved deformation was observed in plain carbon steel die in the order 45o, 90o and 75o entry angles. However, maximum lateral deformation index of 2.1 was observed with the plain carbon steel die at 45o entry angle against 1.8 of tool steel die. The disparity in the lateral deformation index was attributed to varied responses along longitudinal elongation on load application.
机译:研究了挤塑6063铝合金在不同模头进入角下的力学性能响应。模拟了入射角为15o,30o,45o,60o,75o和90o的普通碳素和工具钢模具。在环境温度(37oC)上对合金进行挤压,并对来自各个角度的挤压样品进行与服务相关的选定机械测试和微观结构分析。结果表明,最大挤出压力和挤出硬度随模头进入角的增加而增加。挤出压力增加的原因可能是挤出物的晶体滑移系统相对于挤出方向呈钝角变化。在普通碳素钢模具中观察到入口角为45o,90o和75o时变形得到改善。但是,普通碳钢模具在45°入射角处相对于工具钢模具1.8的最大横向变形指数为2.1。横向变形指数的差异是由于载荷作用时沿纵向伸长的响应不同而引起的。

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