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材料工程  2018, Vol. 46 Issue (11): 134-140    DOI: 10.11868/j.issn.1001-4381.2017.000127
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
孪晶诱发的AZ31镁合金静态再结晶行为
石晶晶, 叶朋, 崔凯旋, 汪炳叔, 邓丽萍, 王晨, 李强
福州大学 材料科学与工程学院, 福州 350108
Static Recrystallization Induced by Twinning in AZ31 Magnesium Alloy
SHI Jing-jing, YE Peng, CUI Kai-xuan, WANG Bing-shu, DENG Li-ping, WANG Chen, LI Qiang
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
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摘要 利用电子背散射衍射(EBSD)技术研究了AZ31镁合金单轴压缩变形后产生不同类型的孪晶组织对静态再结晶的晶粒形核及取向变化的影响,样品在室温下进行应变为16%的单轴压缩变形,然后在250℃分别保温3,20min和60min进行退火实验。结果表明:样品在退火3min后只有局部发生再结晶,且再结晶小晶粒优先在{1011}-{1012}二次孪晶内部形核,而{1012}拉伸孪晶不利于再结晶晶粒的形核;退火20min后完成再结晶过程。由孪晶诱发的新形核的再结晶晶粒与基体的取向差在38°两侧随机分布,可明显细化原始晶粒,并弱化变形后的取向。
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石晶晶
叶朋
崔凯旋
汪炳叔
邓丽萍
王晨
李强
关键词 镁合金孪晶静态再结晶EBSD取向    
Abstract:The effect of twin types in compressed samples on nucleation of grains and texture evolution during static recrystallization was investigated by using electron backscattered diffraction analysis (EBSD). The cylindrical samples were compressed with a strain of 16% at room temperature, followed by annealing after holding at 250℃ for 3min, 20min and 60min, respectively. The results show that only a few recrystallization grains can be found in local regions and first nucleated within the twins after annealing for 3min. Recrystallization process can be completed after annealing for 60min. Further research shows that the {1011}-{1012} double twins are the preferred sites for new grains nucleation, while the {1012} tensile twins are unfavorable for the nucleation of static recrystallization. The misorientation angle distribution between new grains and matrix is around 38° randomly. The grain size can be refined effectively by static recrystallization, and the deformation texture is weakened during annealing.
Key wordsmagnesium alloy    twin    static recrystallization    EBSD    orientation
收稿日期: 2017-02-08      出版日期: 2018-11-19
中图分类号:  TG146.2  
基金资助: 
通讯作者: 汪炳叔(1982-),男,副教授,博士,主要从事镁合金塑性变形机理研究,联系地址:福建省福州市闽侯上街福州大学材料科学与工程学院(350108),E-mail:bswang@fzu.edu.cn     E-mail: bswang@fzu.edu.cn
引用本文:   
石晶晶, 叶朋, 崔凯旋, 汪炳叔, 邓丽萍, 王晨, 李强. 孪晶诱发的AZ31镁合金静态再结晶行为[J]. 材料工程, 2018, 46(11): 134-140.
SHI Jing-jing, YE Peng, CUI Kai-xuan, WANG Bing-shu, DENG Li-ping, WANG Chen, LI Qiang. Static Recrystallization Induced by Twinning in AZ31 Magnesium Alloy. Journal of Materials Engineering, 2018, 46(11): 134-140.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.000127      或      http://jme.biam.ac.cn/CN/Y2018/V46/I11/134
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