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首页> 外文期刊>Materials Science and Engineering >Dynamic recrystallization behaviors of high Mg alloyed Al-Mg alloy during high strain rate rolling deformation
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Dynamic recrystallization behaviors of high Mg alloyed Al-Mg alloy during high strain rate rolling deformation

机译：高应变率轧制变形期间高镁合金Al-Mg合金的动态再结晶性能

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摘要

The effects of the rolling parameters (rolling temperature, strain rate and thickness reduction) on the dynamic recrystallization (DRX) behaviors of the direct-chill cast high Mg alloyed Al-Mg alloy (Al-9.2Mg-0.8Mn-0.2Zr-0.15Ti) are carefully investigated. The as-rolled microstructures are characterized by optical microscope (OM), transmission electron microscopy (TEM), electron backscattered diffraction (EBSD) and X-ray diffraction (XRD). Strain rate plays a crucial role in enhancing DRX and the alloy experienced high strain rate rolling (HSRR) at 400 degrees C with a strain rate of 10 s(-1) is featured with a fine-grained microstructure, with the DRX volume fraction of 95.4%, the average grain size of 2.63 mu m and the fraction of high-angle grain boundaries (HAGBs) up to 91.9%. The relatively high fraction of HAGBs is associated with the full DRX related to the continuous DRX. The discontinuous DRX and the continuous DRX occur simultaneously in the high Mg alloyed Al-Mg alloy during HSRR and the strain-induced deformation bands (DBs) plays an important role in enhancing the DRX process.
机译：轧制参数（轧制温度，应变率和厚度降低）对直接冷却铸型高镁合金Al-Mg合金的动态再结晶（DRX）行为（Al-9.2mg-0.8mn-0.2zr-0.15 TI）经过精心调查。用光学显微镜（OM），透射电子显微镜（TEM），电子背散射衍射（EBSD）和X射线衍射（XRD）的卷轧机的微观结构特征。应变率在增强DRX中起着至关重要的作用，并且在400摄氏度的高应变率轧制（HSRR）具有10s（-1）的应变速率，具有细粒的微观结构，具有DRX体积分数95.4％，平均粒径为2.63亩，高角度晶界（HAGBS）的分数高达91.9％。相对较高的哈格布与与连续DRX相关的完整DRX相关联。在HSRR期间，在高Mg合金化Al-Mg合金中同时发生不连续的DRX和连续DRX，并且应变诱导的变形带（DBS）在增强DRX过程方面起着重要作用。

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  • 来源
    《Materials Science and Engineering》 |2019年第10期|59-69|共11页
  • 作者

    Li Xinyu; Xi Weijun; Yan Hongge; Chen Jihua; Su Bin; Song Min; Li Zhenzhen; Li Yingli;

  • 作者单位

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Cent S Univ State Key Lab Powder Met Changsha 410083 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

    Hunan Univ Sch Mat Sci & Engn Changsha 410082 Hunan Peoples R China|Hunan Univ Hunan Prov Key Lab Spray Deposit Technol & Applic Changsha 410082 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Al-Mg alloys; High strain rate rolling; Dynamic recrystallization; Fine grains;

    机译：Al-Mg合金;高应变率轧制;动态再结晶;细粒;

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