| 粉末冶金法制备SiC晶须增强MB15镁基复合材料 |
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| 引用本文： | 郗雨林,柴东朗,张文兴,席生歧,周敬恩.粉末冶金法制备SiC晶须增强MB15镁基复合材料[J].稀有金属材料与工程,2005,34(7):1131-1134. |
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| 作者姓名： | 郗雨林 柴东朗 张文兴 席生歧 周敬恩 |
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| 作者单位： | 西安交通大学材料学院,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金(59771016)，科技部重大项目前期专项(02061005)，陕西省自然科学基金(2003E117)资助 |
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| 摘 要： | 采用粉末冶金法制备了SiC晶须增强镁基复合材料(SiCW／MB15)试样。通过检测基体显微硬度探讨了SiCW对镁合金时效规律的影响，并借助扫描电镜(SEM)、透射电镜(TEM)和拉伸试验，研究了混粉方式对复合材料室温力学性能、SiCW分布及显微结构的影响。结果表明，MB15及其复合材料的时效硬化曲线上均存在双峰现象；SiCW的加入既提高了MB5的硬度，又加快了其时效速度：混粉方式对晶须分布及SiCW／MB15复合材料的室温力学性能影响很大。
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| 关 键 词： | 粉末冶金 SiC晶须 镁基复合材料 时效特性 力学性能 |
| 文章编号： | 1002-185X(2005)07-1131-04 |
| 修稿时间： | 2004年10月9日 |
SiC Whiskers-reinforced MB15 Magnesium Matrix Composites by Powder Metallurgy |
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| Xi Yulin,Chai Donglang,Zhang Wenxing,Xi Shengqi,Zhou Jingen.SiC Whiskers-reinforced MB15 Magnesium Matrix Composites by Powder Metallurgy[J].Rare Metal Materials and Engineering,2005,34(7):1131-1134. |
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| Authors: | Xi Yulin Chai Donglang Zhang Wenxing Xi Shengqi Zhou Jingen |
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| Abstract: | Specimens of MB15 magnesium alloy reinforced with SiC whiskers (SiCw/MB15) were fabricated using powder metallurgy route (PM). The influence of SiCw on the 150oC aging behavior of MB15 alloy was investigated by microhardness-testing, and SEM, TEM and tensile tests studied the influence of powder-mixing methods on the distribution of SiCw and the mechanical properties of SiCw/MB15. The results reveal that the double peaks exist in the age-hardening curves of both the unreinforced and the reinforced MB15 alloy, and the addition of SiCw can accelerate the age-hardening process of MB15 alloy apart from increasing its micro- hardness, moreover, the mechanical properties of SiCw/MB15 composite are significantly influenced by powder-mixing methods of PM. |
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| Keywords: | powder metallurgy SiC whisker magnesium matrix composites aging behavior mechanical properties |
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