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用JCXA—733型电子探针、H—800型透射电镜、D/max-IIIA型X射线衍射仪等研究了Al65Cu20Cr15准晶颗粒/铝基复合材料中的准晶颗粒在热压过程中的扩散相变结果表明,在热压温度为600,650和700℃的工艺条件下,准晶颗粒的转变产物分别为FIQC,(DQC+DA)+θ和θ相.SIQC相在与纯铝的扩散相变过程中经过过渡相FIQC,DQC,DA最终转变为θ相而达到平衡态

Diffuse phase transformations of A165Cu20Cr15 quasicrystalline particles/AI composite were studied by TEM for the first time. It shows that SIQC quasicrystalline particles transform into FIQC, (DQC+DA)+θand θ phases respectively at the different hot press temperatures of 600, 650 and 700 ℃. During diffusion-controlled phase transformation, SIQC phase transforms through the transitional FIQC, DQC, DA phase to the stable θ phase.

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