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东京大学Kinchi科学工业实验室最近研究成功一种生产和加工半熔融态颗粒增加铝基复合材料的新工艺。该工艺生产的复合材料中含二种比重不同的成分,即铝合金和混合在复合材料里的氧化铝,并且可以把这种复合材料做成管、棒、线材等产品。该工艺首先是把半熔融态下加热的铝合金进行机械搅拌,并将氧化铝颗粒混合在铝合金里。在半熔融态下进行搅拌可以使基体金属转化为粘滞流体,让增强颗粒容易地掺入进去。这时,颗粒保存在基体金属里面,防止因比重不同而使基体金属与增强颗粒分离。
Kinchi Science and Industry Laboratory, University of Tokyo Recently studied a new production and processing of semi-molten particles to increase the new aluminum-based composite materials. The composite produced in this process contains two different proportions of aluminum alloy and aluminum oxide mixed in the composite material, and can be made into such products as tubes, rods, wires and the like. The process involves first mechanically stirring the aluminum alloy heated in the semi-molten state and mixing the alumina particles in the aluminum alloy. Agitation in the semi-molten state converts the matrix metal to a viscous fluid, allowing the reinforcing particles to be easily incorporated. At this time, the particles are retained in the base metal to prevent separation of the base metal from the reinforcing particles due to the difference in specific gravity.