轧制路径对Mg-Al-Ca-Mn-Zn镁合金成形性及组织性能的影响

doi:10.13251/j.issn.0254-6051.2023.11.021

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

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.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 Dejun^1,2, Sun Youping^1,2,3, He Jiangmei^1,2,3, Luo Guojian^1,2, Luo Zhang^1,2

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/Abstract

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

中图分类号:

TG146.22

方德俊, 孙有平, 何江美, 罗国建, 罗章. 轧制路径对Mg-Al-Ca-Mn-Zn镁合金成形性及组织性能的影响[J]. 金属热处理, 2023, 48(11): 137-142.

Fang Dejun, Sun Youping, He Jiangmei, Luo Guojian, Luo Zhang. Effect of rolling routes on formability, microstructure and mechanical properties of Mg-Al-Ca-Mn-Zn magnesium alloy[J]. Heat Treatment of Metals, 2023, 48(11): 137-142.

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轧制路径对Mg-Al-Ca-Mn-Zn镁合金成形性及组织性能的影响

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

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