| AZ31镁合金中拉伸孪晶静态再结晶的分析 |
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| 引用本文： | 李萧,杨平,孟利,崔凤娥.AZ31镁合金中拉伸孪晶静态再结晶的分析[J].金属学报,2010(2). |
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| 作者姓名： | 李萧 杨平 孟利 崔凤娥 |
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| 作者单位： | 北京科技大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金项目资助50571009~~ |
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| 摘 要： | 基于前期工作对压缩孪晶静态再结晶的分析,主要利用XRD和EBSD技术进一步研究AZ31镁合金中拉伸孪晶静态再结晶过程中组织和织构的演变规律,以及再结晶初期新晶粒的取向特征,结果表明:拉伸孪晶不能有效地促进再结晶形核,其细化晶粒的效果不显著,其再结晶速率显著延迟于压缩孪晶;退火过程中并没有生成新的再结晶织构组分,表现为初始基面织构的减弱;新晶粒优先在拉伸孪晶的变体交叉处,或拉伸孪晶与压缩孪晶的交叉处形核,但其取向规律性不强,没有遵循初始拉伸或压缩孪晶内的取向规律,同时还对拉伸与压缩孪晶的再结晶行为进行了比较。
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| 关 键 词： | 镁合金 拉伸孪晶 织构 再结晶 取向 |
ANALYSIS OF THE STATIC RECRYSTALLIZATION AT TENSION TWINS IN AZ31 MAGNESIUM ALLOY |
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| LI Xiao,YANG Ping,MENG Li,CUI Feng'e School of Materials Science , Engineering,University of Science , Technology Beijing,Beijing.ANALYSIS OF THE STATIC RECRYSTALLIZATION AT TENSION TWINS IN AZ31 MAGNESIUM ALLOY[J].Acta Metallurgica Sinica,2010(2). |
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| Authors: | LI Xiao YANG Ping MENG Li CUI Feng'e School of Materials Science Engineering University of Science Technology Beijing Beijing |
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| Affiliation: | LI Xiao,YANG Ping,MENG Li,CUI Feng'e School of Materials Science , Engineering,University of Science , Technology Beijing,Beijing 100083 |
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| Abstract: | Due to the poor plasticity of magnesium alloys at room temperature(about 15%), twinning plays an important role in the deformation of magnesium alloys,and twins will be the dominant recrystallization nucleation sites.There are at least two types of twinning in magnesium:the {10(?)2}-type tension twinning and the {10(?)1}-type compression twinning.Tension twinning proceeds much more easily than compression twinning since its volume fraction is much higher than that of compression twins,which may have a promo... |
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| Keywords: | magnesium alloy tension twin texture recystallization orientation |
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