锻压技术

热轧卷曲温度对Al-Mg-Si合金组织及织构的影响

英文标题：Influence of hot rolling curling temperatures on microstructure and texture of Al-Mg-Si alloy

单位：1. 山东南山铝业股份有限公司国家铝合金压力加工工程技术研究中心 2. 烟台南山学院材料科学与工程学院

分类号：TG146.2

出版年,卷(期):页码：2025,50(2):139-150

摘要：

通过光学显微镜(OM)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)等分析手段,系统研究了不同热轧卷曲温度对Al-Mg-Si合金微观组织及织构的影响。结果表明：随热轧卷曲温度的提高，热轧板晶粒越来越细小，再结晶程度越来越高；热轧板基体中的Al(Fe，Mn)Si相含量及尺寸受热轧卷曲温度的影响较小，但表层相尺寸低于心部，Mg2Si相随着热轧卷曲温度的升高而逐渐粗化长大。热轧板的Cube、CubeND等再结晶织构随着热轧卷曲温度的升高而增多，且表层再结晶织构体积分数明显高于心部。此外，热轧卷曲温度对板材力学性能的影响较小，热轧卷曲温度高的板材析出的粗大弥散相有利于提升其深冲性能。

The influences of different hot rolling curling temperatures on the microstructure and texture of Al-Mg-Si alloy were systematically studied by analytical methods such as optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). The results show that with the increasing of hot rolling curling temperature, the grain size of hot rolled sheet becomes smaller, and the degree of recrystallization becomes higher. The content and size of Al(Fe,Mn)Si phase in the hot rolled sheet matrix are not significantly affected by the hot rolling curling temperature, but the size of surface phase is lower than that in the core, and Mg2Si phase gradually coarsens and grows with the increasing of hot rolling curling temperature. The recrystallization textures such as Cube and CubeND in the hot rolled sheet increase with the increasing of hot rolling curling temperature, and the volume fraction of surface recrystallization texture is significantly higher than that in the core. In addition, the hot rolling curling temperature has little effect on the mechanical properties of the sheet, and the coarse dispersed phase precipitated from the sheet with high hot rolling curling temperature is beneficial for improving its deep drawing performance.

基金项目：

作者简介：孙宁（1995-），女，硕士，工程师,E-mail：ningsun95@163.com

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