挤压速度对6082铝合金管材显微组织和力学性能的影响  

Effect of extrusion speed on microstructure and mechanical properties of 6082 aluminum alloy pipe

作　　者：凌建全 李一峰 刘方镇 秦简 于承斌 朱凯 贾娈娈 长海博文 LING Jian-quan;LI Yi-feng;LIU Fang-zhen;QIN Jian;YU Cheng-bin;ZHU Kai;JIA Luan-luan;HIROMI Nagaumi(Shagang School of Iron and Steel,Soochow University,Soochow 215137,China;High-Performance Metal Structural Materials Research Institute,Soochow University,Soochow 215137,China;Shandong Key Laboratory of Advanced Aluminum Base Materials and Technology,Binzhou 256600,China;Weiqiao National Science(Binzhou)Science and Engineering Industry Technology Research Institute Co.Ltd,Binzhou 256600,China)

机构地区：[1]苏州大学沙钢钢铁学院,江苏苏州215137 [2]苏州大学高性能金属结构材料研究院,江苏苏州215137 [3]山东省先进铝基材料与技术重点实验室,山东滨州256600 [4]魏桥国科(滨州)科学工程产业技术研究院有限公司,山东滨州256600

出　　处：《轻合金加工技术》2022年第12期35-40,共6页Light Alloy Fabrication Technology

摘　　要：挤压速度不仅决定着生产效率,而且对挤压制品的显微组织和力学性能有着很大的影响。本试验探讨了不同挤压速度对6082铝合金管材显微组织和力学性能的影响。结果表明:挤压过程中坯料和模具的摩擦促进动态再结晶的发生;提高挤压速度,再结晶晶粒尺寸变大、再结晶面积增大;随着挤压速度的升高,管材的屈服强度和抗拉强度先降低后逐渐升高;当挤压温度为450℃、挤压速度为10 mm/s时,6082铝合金管材的力学性能最好。The extrusion speed not only determines the production efficiency,but also has a great influence on the microstructure and mechanical properties of the extruded products.The effects of different extrusion speeds on the microstructure and mechanical properties of 6082 aluminum alloy pipes were investigated.The results show that the friction between billet and die promotes the dynamic recrystallization,increases the extrusion speed,increases the recrystallization grain size and recrystallization area.With the increase of extrusion speed,the yield strength and tensile strength of the pipe decrease first and then increase gradually.When the extrusion temperature is 450℃and the extrusion speed is 10 mm/s,the mechanical properties of 6082 aluminum alloy pipes are the best.

关 键 词：6082铝合金 挤压速度 动态再结晶 显微组织 力学性能 

分 类 号：TG379[金属学及工艺—金属压力加工]