再结晶颗粒状断口对铝型材挤压融合口的性能影响  

Effect of recrystallization granular fracture on properties of extrusion fusion joint of aluminum profiles

作　　者：张富亮 徐宁 周广宇 王宇 陆宏韬 李恩波 Zhang Fuliang;Xu Ning;Zhou Guangyu;Wang Yu;Lu Hongtao;Li Enbo(Liaoning Zhongwang Group Co.,Ltd.,Liaoning 111003,China)

机构地区：[1]辽宁忠旺集团有限公司,辽阳111003

出　　处：《铝加工》2023年第1期18-21,共4页Aluminium Fabrication

摘　　要：对不同合金、不同挤压比、不同位置的挤压融合口的力学性能、金相组织以及断口形貌进行了对比分析。结果发现:再结晶颗粒状断口是由于铝型材在挤压过程中挤压温度过高、挤压变形量过大所导致的。过高的挤压温度和变形量会使材料形成粗大的再结晶颗粒状断口组织,使再结晶晶粒严重长大。粗大的再结晶颗粒会降低材料物理性能,在实际生产过程中应严格控制其产生。Through comparative analysis of mechanical properties, metallographic structure and fracture morphology of extrusion fusion interfaces of different alloys, different extrusion ratios and different positions. The results show that the recrystallization granular fracture is caused by high extrusion temperature and excessive extrusion deformation in the extrusion process. Excessive extrusion temperature and deformation will make the material form coarse recrystallization granular fracture structure, so that the recrystallization grains seriously grow up. And the coarse recrystallization particles will reduce the physical properties of the material, the production of which should be strictly controlled in the actual production process.

关 键 词：铝型材挤压融合口 力学性能 宏观组织 微观组织 颗粒状断口 融合口性能 

分 类 号：TG379[金属学及工艺—金属压力加工]