稳定化处理和Cu元素含量对罐盖用5182铝合金板材β相分布的影响  

Effect of Stabilization Treatment and Cu Content on the β Phase Distribution of 5182 Aluminum Alloy Sheets for Can Lid

作　　者：邹立颖 杨阳 董学光 谷宁杰 ZOU Liying;YANG Yang;DONG Xueguang;GU Ningjie(Chinalco Materials Application Research Institute Co.,Ltd.,Beijing 102209,China)

机构地区：[1]中铝材料应用研究院有限公司,北京102209

出　　处：《铝加工》2024年第2期27-31,共5页Aluminium Fabrication

摘　　要：研究了两种Cu元素含量的罐盖用5182铝合金成品板材经不同温度稳定化处理后的β相分布情况。结果表明:(1)当稳定化温度低于120℃时,两种板材均有大量β相沿晶界和剪切带连续析出;当稳定化温度为160℃时,两种板材β相连续析出现象显著减少;当稳定化温度高于160℃时,随稳定化温度的升高,β相连续析出现象逐渐减少;当稳定化温度为220℃时,β相分布最均匀,无明显连续析出现象,推测此时材料的抗应力腐蚀断裂敏感性最佳。(2)Cu元素质量分数为0.1%的5182板材比Cu元素质量分数为0.06%的5182板材β相析出更少,分布更均匀。The β phase distribution of 5182 aluminum alloy sheets with two kinds of Cu content after different temperature stabiliza⁃tion treatmentw was studied.The results show that:(1)When the stabilization temperature is lower than 120℃,a large amount of β phase is continuously precipitated along the grain boundary and shear zone of both kinds of sheets;When the stabilization temperature is 160℃,the continuous precipitation of β phase of the two sheets is significantly reduced;When the stabilization temperature is high⁃er than 160℃,the continuous precipitation of β phase gradually decreases with the increase of stabilization temperature;When the sta⁃bilization temperature is 220℃,the β phase distribution is the most uniform,and there is no obvious continuous precipitation phe⁃nomenon,which suggests that the fracture sensitivity of the material against stress corrosion is the best.(2)The 5182 sheets with 0.1% copper mass fraction has less β phase precipitation and more uniform distribution than the 5182 sheets with 0.06% copper mass fraction.

关 键 词：5182铝合金 Cu元素 Β相 稳定化处理 

分 类 号：TG146.21[一般工业技术—材料科学与工程]