Method for evaluating service condition of high-temperature alloy turbine blade
A technology of turbine blades and high-temperature alloys, applied in the direction of applying stable tension/pressure to test material strength, biological neural network models, instruments, etc., can solve subjective errors, accuracy and operability cannot be achieved very high, further consideration is needed Deepening and other issues, to achieve the effect of reliable evaluation results, exclusion of complex influences, strong engineering application significance and broad prospects
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[0027] The following examples will further illustrate the present invention in conjunction with the accompanying drawings, so that those skilled in the art can better understand the advantages and features of the present invention.
[0028] First, the standard heat-treated blade material DZ125 alloy was subjected to persistent interruption experiments under different temperature, stress and time conditions to obtain microstructures with different damage states. Refer to the grid number point method in GB / T 15749 to quantify the volume fraction (Vf) of γ'phase. Set 216 grid intersection points. When the intersection point is in the γ'phase, it is counted as 1, when the intersection point is in the interface between the γ'phase and the matrix, it is counted as 0.5, and when the intersection is in the matrix, it is counted as 0. The ratio of the above statistical results to the total number of intersection points is Is Vf. Use publicity:
[0029]
[0030] Statistics and calculation ...
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