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本文采用测定粉末真密度法、光学显微镜定量金相法和图象分析仪等方法研究了FGH95高温合金粉末空心度、粉末空心平均尺寸与粉末粒度的关系。 的增大而增研究得出:氩气雾化FGH95合金粉末中的空心度、空心平均尺寸均随粉末粒度大。粉末空心的形貌基本上是等轴的、球形的,而且随粉末粒度的增化而越来越呈规则的球形。 研究表明:用上述3种方法来研究FGH95合金粉末的空心度,粉末真密度法测量值有偏离,但3种方法的测量结果,其变化的趋势是一致的;用光学显微镜定量金相法和图象分析仪测定粉末空心的平均尺寸,结果一致。 此外,文中还对FGH95合金扮末与Rene′95合金粉末的空心虚、空心平均尺寸进行了比较。
In this paper, the determination of the relationship between the hollowness of FGH95 superalloy powder, the average size of the powder hollow and the particle size of the powder was studied by measuring the true density of the powder, the quantitative metallographic method by optical microscope and the image analyzer. The results show that: the hollow size and the average hollow size of FGH95 alloy powder in argon atomization are both larger than the powder size. The hollow morphology of the powder is essentially equiaxed, spherical, and more and more spherical as the powder size increases. The results show that there are deviations in the measured values of the FGH95 alloy powders by the three methods mentioned above, but the measured values of the three methods deviate from each other. However, the trends of the three methods are consistent. The metallographic method and image The analyzer measured the average size of the hollow powder, with the same result. In addition, the article also compares the hollow virtual and hollow average size of FGH95 alloy powder with Rene’95 alloy powder.