金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 137-142.DOI: 10.13251/j.issn.0254-6051.2023.11.021

• 工艺研究 • 上一篇    下一篇

轧制路径对Mg-Al-Ca-Mn-Zn镁合金成形性及组织性能的影响

方德俊1,2, 孙有平1,2,3, 何江美1,2,3, 罗国建1,2, 罗章1,2   

  1. 1.广西科技大学 机械与汽车工程学院, 广西 柳州 545006;
    2.广西土方机械协同创新中心, 广西 柳州 545006;
    3.广西汽车零部件与整车技术重点实验室, 广西 柳州 545006
  • 收稿日期:2023-05-25 修回日期:2023-08-31 出版日期:2023-11-25 发布日期:2023-12-27
  • 通讯作者: 孙有平,教授,E-mail:syptaiji@126.com
  • 作者简介:方德俊(1996—),男,硕士研究生,主要研究方向为镁合金的塑性成形,E-mail:15655362631@163.com。
  • 基金资助:
    中央引导地方科技发展专项(桂科ZY21195053);柳州市科技计划(2021CBA0102);广西高等学校高水平创新团队项目(桂教师范[2019]52号)

Effect of rolling routes on formability, microstructure and mechanical properties of Mg-Al-Ca-Mn-Zn magnesium alloy

Fang Dejun1,2, Sun Youping1,2,3, He Jiangmei1,2,3, Luo Guojian1,2, Luo Zhang1,2   

  1. 1. School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou Guangxi 545006, China;
    2. Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou Guangxi 545006, China;
    3. Guangxi Key Laboratory of Automobile Components and Vehicle Technology, Liuzhou Guangxi 545006, China
  • Received:2023-05-25 Revised:2023-08-31 Online:2023-11-25 Published:2023-12-27

摘要: 采用金相显微镜、X射线衍射仪、拉伸试验机和扫描电镜等,研究了4种不同轧制路径对Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn镁合金板材成形性、微观组织和力学性能的影响。结果表明,轧制路径对Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn镁合金板材的成形性、显微组织和力学性能都有影响,通过RD+TD多道交叉轧制得到的板材成形性最佳,无边裂产生;相较于单向多道次轧制,板材经多道次交叉轧制后晶粒细化明显,组织趋于均匀,基面织构强度也从9.680降至6.111,并且板材各向异性有显著弱化,塑性得到提升,沿轧制方向伸长率为19%。

关键词: 镁合金, 轧制路径, 成形性, 显微组织, 力学性能

Abstract: Effect of four different rolling routes on formability, microstructure and mechanical properties of the Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn magnesium alloy sheet was investigated by means of metallographic microscopy, X-ray diffractometer, tensile testing machine and scanning electron microscope. The results show that the rolling route has an effect on the formability, microstructure and mechanical properties of the Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn magnesium alloy sheet, and the sheet obtained by RD+TD multi-pass cross-rolling has the best formability and no edge crack. Compared with that of the unidirectional multi-pass rolling, the sheet obtains obvious grain refinement and uniform microstructure after multi-pass cross-rolling, the basal texture intensity is reduced from 9.680 to 6.111, the anisotropy is significantly weakened and the plasticity is improved, with the elongation along rolling direction of 19%.

Key words: magnesium alloy, rolling route, formability, microstructure, mechanical properties

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