稳定化退火温度对Al-6Mg-0.4Mn合金板材组织性能的影响  

Effect of stabilizing annealing temperature on microstructure and properties of Al-6Mg-0.4Mn alloy sheet

作　　者：王海彬[1] 丛福官[1] 谢延翠[1] 于莉莉[1] 张立君[1] 毕苍兆 WANG Hai-bin;CONG Fu-guan;XIE Yan-cui;YU Li-li;ZHANG Li-jun;BI Cang-zhao(Northeast Light Alloy Co.,Ltd.,Harbin 150060)

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2022年第5期18-22,共5页Light Alloy Fabrication Technology

摘　　要：试验研究了稳定化退火温度对3.5mm厚的Al-6Mg-0.4Mn合金冷轧板材微观组织、强度、耐腐蚀性能的影响。研究结果表明:随着板材稳定化退火温度的提高,合金的强度降低,塑性增加,晶间耐腐蚀性能则先升高而后降。当稳定化退火温度为200℃保温2 h时,由于在晶界处形成了连续分布的β相,合金的晶间耐腐蚀性能最差。合金板材经320℃2h稳定化退火可实现强度、塑性和耐蚀性的最佳配合。The effect of stabilizing annealing temperature on microstructure,strength and corrosion resistance of cold rolled Al-6Mg-0.4Mn alloy sheet with 3.5 mm thickness was studied.The results show that with the increase of stabilizing annealing temperature,the strength of the plate decreases and the plasticity increases,while the corrosion resistance increases first and then decreases.When the stabilizing annealing temperature is 200 ℃,and holding time is 2 h,the alloy has the worst intergranular corrosion resistance due to the continuous distribution of β phase at the grain boundary.The optimal combination of strength,plasticity and corrosion resistance can be achieved by stabilizing annealing at 320 ℃for 2 h.

关 键 词：稳定化退火温度 Al-6Mg-0.4Mn合金 显微组织 力学性能 腐蚀性能 

分 类 号：T166.3[一般工业技术]