NI-BASED ALLOY, NI-BASED ALLOY FOR GAS TURBINE COMBUSTOR, MEMBER FOR GAS TURBINE COMBUSTOR, MEMBER FOR LINER, MEMBER FOR TRANSMISSION PIECE, LINER, AND TRANSMISSION PIECE

摘要

This Ni-based alloy is observed at the measurement visual field area S ₀ to calculate the area equivalent diameter D defined by D = A ^1/2 with respect to the area A of the maximum size nitride existing in the visual field, n, and data of n area equivalence diameters D are obtained, and the data of the area equivalent diameters D are sorted in a small order to obtain D ₁ , D ₂ , ..., D _n , y _j is obtained, the X axis is plotted as the area equivalent diameter D, the Y axis is plotted as the reference parameter y _j on the XY axis coordinate, the regression line y _j = a x D + b (a, b is an integer) The estimated maximum size of the nitride is calculated by substituting the obtained y _{j for} the target cross-sectional area S of 100 mm ₂ into the regression line, and the estimated maximum size of the nitride is 12 mu m or less 25 mu m or less.