Efficiency of process methods for improving the surface quality and fatigue strength of gas-turbine engine disks of the KhN73MBTYu-VD alloy |
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| Authors: | V A Boguslayev V K Yatsenko A G Sakhno N V Gonchar |
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| Affiliation: | (1) MOTOR SICH Joint-Stock Company, Zaporozh’e, Ukraine;(2) Zaporozh’e State Technical University, Zaporozh’e, Ukraine |
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| Abstract: | The results of the present study suggest that a fatigue limit of the crown interslot projections of gas-turbine engine disks
made of the KhN73MBTYu-VD alloy can be raised by subjecting the surface layer of the disk slots to ultrasonic hardening with
balls. We attribute this to a removal of abrasive grits left by previous machining, to a decrease in depletion of the surface
in alloying elements, and a simultaneous improvement in uniformity of the stress-strain state of various sections of the surface
of a slot.
Translated from Problemy Prochnosti, No. 5, pp. 126–133, September–October, 1998. |
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