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Effect of variable thickness cross rolling on edge crack and microstructure gradient of AZ31 magnesium alloy

变厚度交叉轧制对AZ31 镁合金边裂和组织梯度的影响

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Abstract

The hot rolling experiment of AZ31 magnesium alloy was carried out by laying anoverlay mold at the initial temperature of 400 °C. According to the Mizushima automatic plan view pattern control system (MAS) rolling theory and the cross rolling process, different reductions in the middle and edges of the magnesium alloy were realized, and the influence of the regional controlled reduction rolling on the edge cracks and microstructure gradient of the magnesium alloy were analyzed. It is shown that this rolling approach has reduced the maximum edge crack depth of the rolled piece by 56.85%, and there is a weakening tendency in the base surface texture of the strip edge, the base surface texture density drops from 23.97 to 17.48 after ordinary flat rolling. It exhibits basal texture gradients from the edge to the middle of the sheet along the RD direction, which reflected the uneven deformation of the sheets. It is suitable for the processing of metal molds that require large edge reductions such as mobile phone shells, and provided a theoretical basis for the variable thickness rolling of the magnesium alloy strip.

摘要

在400 °C初始温度下, 将AZ31镁合金置于衬板模具上进行热轧实验. 根据MAS轧制理论和交 叉轧制工艺, 实现镁合金边部和中部区域的不同压下量轧制, 分析分区域控制压下率轧制对镁合金边 裂和组织梯度的影响. 结果表明, 这种轧制方法使轧件的最大边缘裂纹深度减小了56.85%, 并且板带 边部的基面织构呈现弱化的趋势, 其基面织构强度从普通平轧时的23.97 下降到17.48. 沿RD方向从 板带边部到中部呈现出一定的组织梯度, 反映了轧板的不均匀变形. 这种轧制方法适用于如手机壳等 需要进行边部大压下量的金属模具的加工过程, 并为镁合金板带的变厚度轧制过程提供了理论依据.

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References

  1. CHU Chen-liang, WU Xiao-quan, QIU Shui-cai, et al. Microstructure and Gd-rich phase evolution of as-cast AZ31-xGd magnesium alloys during semi-solid isothermal heat treatment [J]. Journal of Central South University, 2021, 28(1): 1–15. DOI:https://doi.org/10.1007/s11771-020-4504-x.

    Article  Google Scholar 

  2. XU Tian-cai, YANG Yan, PENG Xiao-dong, et al. Overview of advancement and development trend on magnesium alloy [J]. Journal of Magnesium and Alloys, 2019, 7(3): 536–544. DOI:https://doi.org/10.1016/j.jma.2019.08.001.

    Article  Google Scholar 

  3. LIU Hong-guang, CAO Fu-yong, SONG Guang-ling, et al. Review of the atmospheric corrosion of magnesium alloys [J]. Journal of Materials Science & Technology, 2019, 35(9): 2003–2016. DOI:https://doi.org/10.1016/j.jmst.2019.05.001.

    Article  Google Scholar 

  4. HAN Ting-zhuang, HUANG Guang-sheng, WANG Li-fei, et al. Evolution of microstructure and formability of AZ31 Mg alloy sheets processed by continuous bending with various accumulated strains [J]. Rare Metal Materials and Engineering, 2020(1): 21–26. (in Chinese)

  5. JIA Wei-tao, LE Qi-chi. Heat-transfer analysis of AZ31B Mg alloys during single-pass flat rolling: Experimental verification and mathematical modeling [J]. Materials & Design, 2017, 121: 288–309. DOI: https://doi.org/10.1016/j.matdes.2017.02.079.

    Article  Google Scholar 

  6. DING Yun-peng, LE Qi-chi, ZHANG Zhi-qiang, et al. Effect of vertical rolling at various temperatures on subsequent multi-pass severe rolling of AZ31B alloy sheet [J]. Journal of Materials Processing Technology, 2013, 213(12): 2101–2108. DOI:https://doi.org/10.1016/j.jmatprotec.2013.06.005.

    Article  Google Scholar 

  7. WEI Jian-chun, HUANG Qing-xue, HUANG Zhi-quan, et al. Variable gauge rolling impact on the edge damage of AZ31 magnesium alloy sheets [J]. Rare Metal Materials and Engineering, 2018, 47(2): 652–656. (in Chinese)

    Google Scholar 

  8. ZHANG Hua, HUANG Guang-sheng, ROVEN H J, et al. Influence of different rolling routes on the microstructure evolution and properties of AZ31 magnesium alloy sheets [J]. Materials & Design, 2013, 50: 667–673. DOI: https://doi.org/10.1016/j.matdes.2013.03.053.

    Article  Google Scholar 

  9. LIU Di, LIU Zu-yan, WANG Er-de. Effect of rolling reduction on microstructure, texture, mechanical properties and mechanical anisotropy of AZ31 magnesium alloys [J]. Materials Science and Engineering A, 2014, 612: 208–213. DOI:https://doi.org/10.1016/j.msea.2014.06.034.

    Article  Google Scholar 

  10. ZHI Chen-chen, MA Li-feng, HUANG Qing-xue, et al. Improvement of magnesium alloy edge cracks by multi-cross rolling [J]. Journal of Materials Processing Technology, 2018, 255: 333–339. DOI:https://doi.org/10.1016/j.jmatprotec.2017.12.022.

    Article  Google Scholar 

  11. GUO Fei, ZHANG Ding-fei, YANG Xu-sheng, et al. Effect of rolling speed on microstructure and mechanical properties of AZ31 Mg alloys rolled with a wide thickness reduction range [J]. Materials Science and Engineering A, 2014, 619: 66–72. DOI:https://doi.org/10.1016/j.msea.2014.09.024.

    Article  Google Scholar 

  12. GUO Fei, ZHANG Ding-fei, YANG Xu-sheng, et al. Influence of rolling speed on microstructure and mechanical properties of AZ31 Mg alloy rolled by large strain hot rolling [J]. Materials Science and Engineering A, 2014, 607: 383–389. DOI:https://doi.org/10.1016/j.msea.2014.04.024.

    Article  Google Scholar 

  13. JIA Wei-tao, LE Qi-chi, TANG Yan, et al. Role of prevertical compression in deformation behavior of Mg alloy AZ31B during super-high reduction hot rolling process [J]. Journal of Materials Science & Technology, 2018, 34(11): 2069–2083. DOI:https://doi.org/10.1016/j.jmst.2018.04.005.

    Article  Google Scholar 

  14. HUANG Zhi-quan, HUANG Qing-xue, WEI Jian-chun, et al. Inhibitory effects of prefabricated crown on edge crack of rolled AZ31 magnesium alloy plate [J]. Journal of Materials Processing Technology, 2017, 246: 85–92. DOI: https://doi.org/10.1016/j.jmatprotec.2017.01.034.

    Article  Google Scholar 

  15. XIE Zhen-dong, GUAN Yan-jin, YU Xiao-hui, et al. Effects of ultrasonic vibration on performance and microstructure of AZ31 magnesium alloy under tensile deformation [J]. Journal of Central South University, 2018, 25(7): 1545–1559. DOI:https://doi.org/10.1007/s11771-018-3847-z.

    Article  Google Scholar 

  16. ZHANG Ding-fei, DAI Qing-wei, FANG Lin, et al. Prediction of edge cracks and plastic-damage analysis of Mg alloy sheet in rolling [J]. Transactions of Nonferrous Metals Society of China, 2011, 21(5): 1112–1117. DOI: https://doi.org/10.1016/S1003-6326(11)60829-7.

    Article  Google Scholar 

  17. DING Yun-peng, LE Qi-chi, ZHANG Zhi-qiang, et al. Effect of rolling speed on microstructure and mechanical properties of as-cast AZ31B alloy under different reduction schedules [J]. Journal of Materials Processing Technology, 2016, 233: 161–173. DOI:https://doi.org/10.1016/j.jmatprotec.2016.02.023.

    Article  Google Scholar 

  18. WANG Hui-yuan, FENG Ting-ting, ZHANG Lei, et al. Achieving a weak basal texture in a Mg-6Al-3Sn alloy by wave-shaped Die rolling [J]. Materials & Design, 2015, 88: 157–161. DOI:https://doi.org/10.1016/j.matdes.2015.08.154.

    Article  Google Scholar 

  19. SUN Zheng, WU Yang, XIN Yun-chang, et al. Varying the strong basal texture in a Mg-3Al-1Zn plate by a new wave-shaped interface rolling [J]. Materials Letters, 2018, 213: 151–153. DOI:https://doi.org/10.1016/j.matlet.2017.11.032.

    Article  Google Scholar 

  20. WANG Jin-hui, JIN Pei-peng, LI Xiao-qiang, et al. Effect of rolling with different amounts of deformation on microstructure and mechanical properties of the Mg-1Al-4Y alloy [J]. Materials Characterization, 2020, 161: 110149. DOI:https://doi.org/10.1016/j.matchar.2020.110149.

    Article  Google Scholar 

  21. NUGMANOV D, KNEZEVIC M, ZECEVIC M, et al. Origin of plastic anisotropy in (ultra)-fine-grained Mg-Zn-Zr alloy processed by isothermal multi-step forging and rolling: Experiments and modeling [J]. Materials Science and Engineering A, 2018, 713: 81–93. DOI: https://doi.org/10.1016/j.msea.2017.12.045.

    Article  Google Scholar 

  22. JI Ya-feng, DUAN Jin-rui, LI Hua-ying, et al. Improvement of edge crack damage of magnesium alloy by optimizing the edge curve during cross variable thickness rolling [J]. The International Journal of Advanced Manufacturing Technology, 2021, 112(7, 8): 1993–2002. DOI: https://doi.org/10.1007/s00170-020-06517-x.

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China

    Ya-feng Ji  (姬亚锋), Jin-rui Duan  (段晋芮), Hao Yuan  (原浩), Hua-ying Li  (李华英) & Li-feng Ma  (马立峰)

  2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, China

    Jie Sun  (孙杰)

Authors
  1. Ya-feng Ji  (姬亚锋)
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  2. Jin-rui Duan  (段晋芮)
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  3. Hao Yuan  (原浩)
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  4. Hua-ying Li  (李华英)
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  5. Jie Sun  (孙杰)
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  6. Li-feng Ma  (马立峰)
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Corresponding authors

Correspondence to Jin-rui Duan  (段晋芮) or Li-feng Ma  (马立峰).

Additional information

Foundation item

Project(52005358) supported by the National Natural Science Foundation of China; Projects(201901D111243, 201901D111241) supported by the Natural Science Foundation of Shanxi Province, China; Project(2019-KF-25-05) supported by the Natural Science Foundation of Liaoning Province, China

Contributors

The overarching research goals were developed by JI Ya-feng and DUAN Jin-rui. JI Ya-feng and DUAN Jin-rui conducted the physics experiment. DUAN Jin-rui and YUAN Hao established the numerical model. DUAN Jin-rui analyzed the research results. The initial draft of the manuscript was written by DUAN Jin-rui. JI Ya-feng, LI Hua-ying, SUN Jie and MA Li-feng reviewed and edited the draft of manuscript. All authors replied to reviewers’ comments and revised the final version.

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The authors declare that they have no conflict of interest.

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Ji, Yf., Duan, Jr., Yuan, H. et al. Effect of variable thickness cross rolling on edge crack and microstructure gradient of AZ31 magnesium alloy. J. Cent. South Univ. 29, 1124–1132 (2022). https://doi.org/10.1007/s11771-022-4973-1

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  • DOI: https://doi.org/10.1007/s11771-022-4973-1

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