退火温度对 Mg-Li／Al 复合板界面组织与结合强度的影响  

Effect of the annealing temperature on the microstructure and bonding property of the Mg-Li/Al composite

作　　者：郭玉玲[1,2] 陈志强[2] 罗辉[2] 梁伟[2] 王红霞[2] 

机构地区：[1]畅晋中职业技术学院机电工程系,榆次030600 [2]畅太原理工大学材料科学与工程学院,太原030024

出　　处：《塑性工程学报》2014年第4期113-116,122,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51175363);山西省高等学校科技创新资助项目(2013108);2013大学生创新创业资助项目

摘　　要：通过温轧制备5083Al/Mg-9.5Li-2Al/5083Al复合板,经200℃～400℃退火1h处理,利用扫描电子显微镜(SEM)和EDS对所制备的复合板进行显微组织结构观察,采用粘连法测试退火复合板的结合强度。结果表明,200℃温轧可以制备出界面结合良好的5083Al/Mg-9.5Li-2Al/5083Al复合板;复合板在350℃以上退火可形成连续的扩散层,扩散层由靠近镁锂合金一侧的Mg17Al12相和靠近铝合金一侧的Al3Mg2相组成,Li原子固溶于Al3Mg2相中;结合强度测试结果表明,当退火温度为350℃时,界面结合强度最高,达到了20MPa。5083Al/Mg-9.5Li-2Al alloy composite plates were fabricated by warn rolling and annealed at 200 ℃ ～400 ℃ for 1 h . The microstructures of the composite plates were investigated by SEM and EDS ,and the bonding properties of the composite plates were tested by the adhesion method . The results show that the composite plates with a good joint interface are fabricated by warn rolling at 200℃ . The continuous diffusion layers are formed at both 5083Al and Mg-9.5Li-2Al sides of the joint interface after annealing at and above 350 ℃ . The diffusion layers are composed by the Mg17 Al12 phase near by the Mg-Li side and the Al3Mg2 phase near by the Al side .Li is dissolved to Al3Mg2 phase .The result of the bonding property test shows that the inter-facial bond strength of the composite plates annealed at 350 ℃ attains its maximum 20MPa .

关 键 词：镁锂复合板 轧制 界面组织 结合强度 

分 类 号：TG166.4[金属学及工艺—热处理]