Rene'95和FGH95合金中的陶瓷夹杂

Ceramic Inclusion in Rene' 95 Superalloy

    摘要
  • 摘要: 本文采用光学显微镜定量金相法和电子探针等研究方法对热等静压及热等静压+锻造的FGH95粉末高温合金中的陶瓷夹杂进行了定性和定量的分析,并对FGH95合金与Rene'95合金中的陶瓷夹杂作了对比。
    研究得出:FGH95合金中的陶瓷夹杂主要是Al2O3以及Al2O3与SiO2的复合氧化物;而Rene'95合金中,则是SiO2与MgO的复合氧化物以及硅酸铝与MgO的复合氧化物。热等静压的FGH95合金中陶瓷夹杂远远多于Rene'95合金,约高2倍。此外,FGH95合金中的陶瓷夹杂颗粒比Rene95合金要粗大。
    研究表明:采用热等静压+热锻工艺的FGH95合金,其陶瓷夹杂的平均尺寸比热等静压工艺的FGH95合金要小。合金粉末粒度对合金中的陶瓷夹杂有明显影响。

     

    Abstract: Ceramic inclusions in as-HIPed and HIP+forged P/M superalloy specimens were studied by stereological metalography method quantitatively and by Electron Probe Microanalyser qualitatively. The ceramic inclusions in FGH95 superalloy were compared with those in Rene'95 superalloy.The present results show that the ceramic inclusions in FGH95 superalloy consists of mainly Al2O3 and it's complex oxides with SiO2. different from that in Rene'95 alloy, which are complex oxides of SiO2 with MgO and AlSiOa with MgO.The amount of inclusions in FGH95 superalloy is about three times as much as that in Rene'95 superalloy, and the inclusions in FGH95 superalloy are also coarser than those in Rene'95 alloy.

     

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