文章摘要
王 博,陈先华,颜 滔.热轧变形对5052铝合金组织与力学性能的影响[J].材料导报,2015,29(2):114-118
热轧变形对5052铝合金组织与力学性能的影响
Effect of Hot Rolling on Microstructure and Mechanical Properties of 5052 Aluminum Alloy
  
DOI：10.11896/j.issn.1005-023X.2015.02.025
中文关键词: 5052铝合金 热轧 微观组织 力学性能
英文关键词: 5052 aluminum alloy, hot rolling, microstructure, mechanical properties
基金项目:国家国际科技合作计划项目(2011DFR50950)；国家科技支撑计划项目(2012BAF09B04)
作者单位E-mail
王 博 重庆大学材料科学与工程学院, 重庆 400044  
陈先华 重庆大学材料科学与工程学院, 重庆 400044
重庆大学国家镁合金材料工程技术研究中心, 重庆 400044 		20120902006@cqu.edu.cn 
颜 滔 重庆大学材料科学与工程学院, 重庆 400044  
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中文摘要:
      通过光学显微镜、扫描电镜、能谱和X射线衍射分析和拉伸实验等试验分析方法,研究不同热轧变形量(54%、75%)对5052铝合金微观组织和力学性能的影响。结果显示,变形量可显著影响5052铝合金的热变形组织及其力学性能。随着轧制变形量的增加,晶粒被显著拉长,晶界处粗大第二相沿晶界被拉长,甚至被破碎。但是其第二相的组成并没有随着轧制变形量的增加而变化,铸态和轧制态的5052铝合金均由α-Al、Al82Fe18和Mg2Si三相组成。同时随着轧制变形量的增加,其综合力学性能提高,即沿轧制方向且轧制量为75%时的5052铝合金呈现出最优的综合力学性能。
英文摘要:
      The effect of hot rolling on the microstructure and mechanical properties of AA5052 aluminum alloys were investigated by optical micrographs (OM), scanning electron microscopy (SEM) equipped with the energy disperse spectroscopy (EDS), X-ray diffraction (XRD) and tensile tests. The as-cast AA5052 aluminum alloys were hot rolled to the different reduction at 54% and 75%. The results exhibit that the microstructure and the mechanical pro-perties of the hot rolled alloys are affected by the hot rolled reduction significantly. The grain and the coarse second phase are all elongated with the increase of the reduction. However, the phases have no effect by changing the hot rolling. The phases all consist of α-Al,Al82Fe18 and Mg2Si. With the increase of the hot rolled reduction, the mechanical properties are improved, that is to say,when rolling reduction is 75%, the rolling direction exhibits the optimal mechanical properties.
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