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首页> 外文会议>International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials(ISMANAM 2003); 20030824-20030828; Foz do Lguacu; BR >Thermal Stability of Ball Milled Al / Al-Cu-Fe Quasicrystal Metal Matrix Composites
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Thermal Stability of Ball Milled Al / Al-Cu-Fe Quasicrystal Metal Matrix Composites

机译：球磨Al / Al-Cu-Fe准晶体金属基复合材料的热稳定性

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摘要

Al_(65)Cu_(23)Fe_(12) quasicrystalline (QC) powder was used as a filling material for aluminium matrix composites. Quasicrystalline phase was prepared by mechanical alloying of elemental powders and subsequent annealing. To produce the composites, QC was milled together with pure aluminium in the ratios of Al - 20 mass. % QC and Al - 10 mass. % QC for various milling times. It was shown that the QC phase in these composites remains untransformed up to the temperatures of 350 - 400℃. Heating up to higher temperatures initiates the reaction between QC and Al yielding ternary crystalline Al_7Cu_2Fe phase; an increase in the milling time raises the reaction rate.
机译：Al_（65）Cu_（23）Fe_（12）准晶体（QC）粉末用作铝基复合材料的填充材料。通过将元素粉末机械合金化并随后进行退火来制备准晶相。为了生产复合材料，将QC与纯铝一起按Al-20质量比进行研磨。 ％QC和Al-10质量。不同研磨时间的％QC。结果表明，在350-400℃的温度下，这些复合材料的QC相仍保持不变。加热到更高的温度会引发QC和Al之间的反应，从而生成三元结晶Al_7Cu_2Fe相。研磨时间的增加提高了反应速率。

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