退火温度对5505铝合金板材组织和力学性能的影响  

Effect of annealing temperature on the microstructure and mechanical properties of 5505 aluminum alloy sheet

作　　者：黄金哲 邱龙涛 姜星旭 高崇 贵星卉 林师朋 马科 HUANG Jinzhe;QIU Longtao;JIANG Xingxu;GAO Chong;GUI Xinghui;LIN Shipeng;MA Ke(Chinalco Ruimin Co.,Ltd.,Fuzhou 350015,China;School of Materials Science and Engineering,Beihang University,Beijing 102209,China;Institute of Lightweight Materials,Chinalco Application Research Institute Co.,Ltd.,Beijing 102209,China)

机构地区：[1]中铝瑞闽股份有限公司技术质量部,福州350015 [2]北京航空航天大学材料科学与工程学院,北京102209 [3]中铝材料应用研究院有限公司轻量化材料所,北京102209

出　　处：《轻合金加工技术》2025年第1期22-27,58,共7页Light Alloy Fabrication Technology

基　　金：大连市揭榜挂帅项目(2022JB11GX004),极端服役性能精准制造全国重点实验室自主研究课题(ZZYJKT2024-08)。

摘　　要：借助力学性能测试、光学显微镜(OM)和电子背散射衍射(EBSD)研究了退火温度对5505铝合金组织和力学性能的影响。结果表明,提高退火温度会使5505铝合金的晶粒结构、晶界特征和织构发生显著变化。随着退火温度的升高,合金的屈服强度和拉伸强度逐渐降低,而伸长率增加。综合考虑合金的强度和塑性,最佳退火温度为250℃。The effect of annealing temperature on the microstructure and mechanical properties of 5505 aluminum alloy was investigated with mechanical testing,optical microscopy(OM)and electron backscatter diffraction(EBSD).The results indicate that the grain structure,grain boundary characteristics,and texture change significantly with increasing annealing temperature.Specifically,as the annealing temperature increases,the yield strength and tensile strength of the alloy gradually decrease progressively,while the elongation improves.Considering the strength and plasticity of the alloy,the optimal annealing temperature is 250℃.

关 键 词：5505铝合金 退火温度 晶粒组织 抗拉强度 

分 类 号：TG166.3[金属学及工艺—热处理]