6066铝合金热挤压变形行为研究  

Hot extrusion deformation of 6066 aluminum alloy

作　　者：强华[1] 徐尊平[2] 

机构地区：[1]重庆人文科技学院机电与信息工程学院,重庆401524 [2]西南大学材料与能源学部,重庆400715

出　　处：《现代机械》2016年第5期88-90,共3页Modern Machinery

基　　金：重庆市教委科学技术资助项目(KJ1501601)

摘　　要：采用有限元技术模拟了6066铝合金热挤压过程,系统分析了挤压比和摩擦系数对铝合金变形区的流动行为、应变分布及挤压载荷的影响,并通过实验研究了挤压参数对铝合金的组织及力学性能的影响。结果表明:挤压比对材料变形区的应变的影响较大,随挤压比的增大,材料的塑性应变很快增大,晶粒细化越明显,合金的抗拉强度和延伸率也显著提高。随摩擦系数的增大,材料的塑性应变及挤压载荷越大,应变分布的均匀性变差。In this study,we simulated the hot extrusion process of 6066 aluminum alloy with finite element method,and analyzed the influence of extrusion ratio and friction factor on the flow,the strain distribution and the extrusion load of the deformation area. Through metallographic structure observation and tensile property analysis,we studied the influence of extrusion parameters on the structure and mechanical properties of aluminum alloy. The results showed that the extrusion ratio had greater influence on the deformation area. With the increase of the extrusion ratio,the plastic strain increased,the grains became more refined,and the tensile strength and the elongation of the alloy improved significantly. With the increase of the friction factor,the plastic strain and the extrusion load increased,and the strain distribution became less even.

关 键 词：6066铝合金 热挤压 组织 力学性能 

分 类 号：TG397[金属学及工艺—金属压力加工]