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等径角挤压制备超细晶CNTs/AZ31镁基复合材料研究
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英文标题：Study on preparation of ultra-fine grained CNTs/AZ31 alloy composites by equal channel angular pressing |
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作者：周国华 曾效舒 徐强 |
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单位：南昌大学机电工程学院 |
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关键词：碳纳米管 镁基复合材料 等径角挤压 超细晶 显微硬度 |
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分类号：TB33 |
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出版年,卷(期):页码：2009,34(2):106-109 |
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摘要：
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采用模角为90°的模具对退火处理后的AZ31镁基碳纳米管复合材料进行了等径角挤压实验。结果表明:AZ31镁基碳纳米管复合材料经过一道次的等通道角挤压后,复合材料中就有大量的超细晶粒出现。随着道次数增加,超细晶粒比例逐渐增多。四道次挤压后复合材料晶粒尺寸达到1~5μm,显微硬度得到显著提高。
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Carbon nanotubes/AZ31 alloy composites were prepared by means of equal channel angular pressing(ECAP) and in the die with the intersecting angle φ=90°.The results indicate that a great deal of ultra-fine grains appear in carbon nanotubes/AZ31 alloy composites just after one pass of ECAP.With the increasing of pass number,the proportion of ultra-fine grain increases.With four pressing passes,the grains are effectively refined to a mean size of 1-5μm,and the microhardness of the composites have been enhanced significantly.
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基金项目：
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江西省科技厅攻关项目(z02727)
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作者简介：
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参考文献：
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