Effect of Presence of Nano-Size Alumina Particles on the Properties of Elemental Magnesium
Effect of Presence of Nano-Size Alumina Particles on the Properties of Elemental Magnesium
复制标题
纳米氧化铝颗粒的存在对单质镁性能的影响
DOI：
10.4028/www.scientific.net/jmnm.23.171
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Gupta
中科院分区：
文献类型：
--
作者：
X. Zhong;M. Gupta
在本研究中，元素镁通过纳米尺寸的氧化铝颗粒（50 纳米）增强。采用粉末冶金技术合成了复合材料样品，并特别研究了挤压温度和烧结对最终性能的影响。微观结构表征研究的结果证实了氧化铝颗粒的存在和合理均匀的分布。从挤压未烧结样品获得的结果表明，镁的硬度和尺寸稳定性随着氧化铝颗粒含量的增加而增加，而 0.2%YS、UTS 和延展性则恶化。结果进一步表明，包括烧结步骤和在较高温度下挤压可导致尺寸稳定性、硬度、0.2%YS、UTS 和延展性的提高，而氧化铝含量低至重量百分比 1%。
In present study, elemental magnesium was reinforced with nano-size alumina particles (50-nm). The composite samples were synthesized using the technique of powder metallurgy and the effect of extrusion temperature and sintering on the end properties was particularly investigated. The results of microstructural characterization studies confirmed the presence and reasonably uniform distribution of alumina particles. Results obtained from extruded unsintered samples revealed that the hardness and dimensional stability of magnesium increases with an increasing presence of alumina particles while the 0.2%YS, UTS and ductility deteriorated. Results further revealed that including sintering step and extruding at higher temperature lead to an increase in dimensional stability, hardness, 0.2%YS, UTS and ductility for an alumina content as low as one percent by weight.