| 多道次等径角轧制对AZ31镁板组织性能的影响 |
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| 引用本文： | 夏伟军,蒋俊锋,朱素琴,严红革,陈振华.多道次等径角轧制对AZ31镁板组织性能的影响[J].湖南农业大学学报(自然科学版),2010,37(2). |
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| 作者姓名： | 夏伟军 蒋俊锋 朱素琴 严红革 陈振华 |
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| 作者单位： | 湖南大学材料科学与工程学院; |
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| 摘 要： | 对AZ31镁合金进行多道次等径角轧制,并分析其微观组织、宏观织构和室温力学性能.结果表明,随着轧制道次的增加,板材的晶粒组织出现交替细化与粗化的现象,并直接影响板材后续退火组织的大小和均匀性.由于累积剪切变形的作用,等径角轧制后板材的基面织构明显弱化.七道次等径角轧制后基面极轴出现沿轧向分离,板材屈服强度降低约54%,而伸长率提高约43%.基面织构弱化和晶粒细化是等径角轧制板材塑性提高的主要原因.
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| 关 键 词： | 动态再结晶 多道次等径角轧制 累积应变 织构 |
Microstructures and Mechanical Properties of AZ31 Magnesium Alloy Sheet Processed by Multi-pass Equal Channel Angular Rolling |
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| XIA Wei-jun,JIANG Jun-feng,ZHU Su-qin,YAN Hong-ge,CHEN Zhen-hua.Microstructures and Mechanical Properties of AZ31 Magnesium Alloy Sheet Processed by Multi-pass Equal Channel Angular Rolling[J].Journal of Hunan Agricultural University,2010,37(2). |
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| Authors: | XIA Wei-jun JIANG Jun-feng ZHU Su-qin YAN Hong-ge CHEN Zhen-hua |
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| Institution: | College of Materials Science and Engineering;Hunan Univ;Changsha;Hunan 410082;China |
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| Abstract: | AZ31 magnesium alloy sheets were prepared by multi-pass equal channel angular rolling(multi-pass ECAR).The microstructure,texture and tensile properties were investigated.The results have shown that the grains in the sheets are processed alternatively with refined and coarse multi-pass ECAR,which has a great effect on the grain size and the homogeneity in the sheets after annealing.The significant weakening of basal texture is due to the accumulative shear strain.After ECARed for 7 passes,the basal poles sp... |
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| Keywords: | dynamic recrystallization multi-pass ECAR cumulative strain textures |
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