+高级检索
基于3D CA的AZ31镁合金动态再结晶行为研究
作者:
作者单位:

太原科技大学 重型机械教育部工程研究中心

作者简介:

通讯作者:

中图分类号:

基金项目:

国家重点研发计划项目(2018YFB1307902),国家自然科学基金资助项目(U1710113),中国博士后科学基金项目(2017M622903),山西省重点研发计划重点项目(201703D111003,201703D111002),山西省研究生联合培养基地人才培养项目(2018JD33),山西省研究生教育创新项目(2019SY482),山西省高等学校优秀青年学术带头人(2019045),山西省高等学校优秀成果培育项目(2019KJ027).


Dynamic Recrystallization Behavior of AZ31 Magnesium Alloy Based on 3D CA
Author:
Affiliation:

Fund Project:

National Key R&D Program (No. 2018YFB1307902), National Natural Science Foundation of China (No. U1710113), China Post-doctoral Science Foundation (No. 2017M622903), Shanxi Key R&D Project (No. 201703D111003,201703D111002), Shanxi Province Graduate Joint Talent Training Project (No. 2018JD33), Shanxi Graduate Education Innovation Project (2019SY482), Outstanding Young Academic Leader of Colleges and Universities in Shanxi Province (NO.2019045), Shanxi Province Outstanding Achievement Cultivation Project (NO.2019KJ027).

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本文建立了三维元胞自动机(3D-CA)模型,通过热压缩试验和电子背散射衍表征技术(EBSD),对AZ31镁合金在热变形过程中的微观组织演化规律进行可视化和定量预测。根据试验得出的真应力-应变曲线,确定了3D-CA模型参数在试验条件下的取值,建立了模型参数与变形条件(应变、变形温度和应变速率)之间的关系。利用所建立的3D-CA模型,对AZ31镁合金在热变形过程中的流动行为和微观组织演化进行模拟和讨论。结果表明:再结晶体积分数随着应变的增大而增加,随着变形温度的增大或应变速率降低而增大,提高应变速率或降低温度可以细化再结晶晶粒。模拟结果与实验结果吻合较好,相对误差值在4.5%-16.2%之间,所建立的3D-CA模型能够较准确地预测镁合金AZ31的微观组织演化。

    Abstract:

    A three-dimensional cellular automata (3D-CA) model was established to visualize and quantitatively predict the microstructural evolution of AZ31 magnesium alloy during hot deformation by thermal compression test and electronic backscatter characterization (EBSD). According to the true stress-strain curve obtained from the test, the values of the parameters of the 3D-CA model under the test conditions are determined, and the relationship between the parameters of the model and the deformation conditions (strain, deformation temperature and strain rate) is established. The flow behavior and microstructure evolution of AZ31 magnesium alloy during hot deformation were simulated and discussed by using the established 3D-CA model. The results show that the recrystallization integral increases with the increase of strain, and increases with the increase of deformation temperature or the decrease of strain rate. Raising strain rate or decreasing temperature can refine recrystallized grains. The simulation results are in good agreement with the experimental results. The relative error is between 4.5% and 16.2%. The 3D-CA model can accurately predict the microstructure evolution of magnesium alloy AZ31.

    参考文献
    相似文献
    引证文献
引用本文

李伟,楚志兵,王环珠,马立峰,李玉贵,帅美荣,苏辉,薛春.基于3D CA的AZ31镁合金动态再结晶行为研究[J].稀有金属材料与工程,2020,49(9):3091~3098.[liwei, chuzhibing, wanghuanzhu, malifeng, liyugui, shuaimeirong, suhui, xuechun. Dynamic Recrystallization Behavior of AZ31 Magnesium Alloy Based on 3D CA[J]. Rare Metal Materials and Engineering,2020,49(9):3091~3098.]
DOI:10.12442/j. issn.1002-185X.20190723

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-09-04
  • 最后修改日期:2019-12-11
  • 录用日期:2019-12-11
  • 在线发布日期: 2020-10-15
  • 出版日期: