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基于多晶材料球形晶粒的假设合金相理论的基础上,建立了的计算两相片状组织表观值与真实值定量关系的数学模型。结果表明,对于多数多晶材料其晶粒尺寸远大于片间距,片间距的平均表观值与真实值的比可以由修正系数k表征。片间距与晶粒尺寸比值从0.05减小到0.0001,k从1.5391增加到1.5707,k值逐渐接近于π/2。当片间距与晶粒尺寸的比值小于0.001时,可以认为k为常数π/2。本模型比传统方法在得到真实片间距过程中减少了工作量。
Based on the assumed alloy phase theory of spherical grains of polycrystalline material, a mathematical model for quantitative relationship between apparent value and true value of two-phase plate-like structure was established. The results show that for most polycrystalline materials, the grain size is much larger than the interlamellar spacing, and the ratio of the average apparent value of the interlamellar spacing to the true value can be characterized by the correction factor k. The ratio of sheet spacing to grain size decreases from 0.05 to 0.0001, k increases from 1.5391 to 1.5707, and k gradually approaches π / 2. When the ratio of the sheet spacing to the grain size is less than 0.001, k can be regarded as a constant π / 2. Compared with the traditional method, this model reduces the workload during the process of getting the real film pitch.