Thermal fatigue resistance of a monocrystalline alloy |
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| Authors: | L. B. Getsov N. I. Dobina A. I. Rybnikov A. S. Semenov A. Starosel’skii N. V. Tumanov |
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| Affiliation: | (1) St. Petersburg State Polytechnical Institute, St. Petersburg, Russia;(2) “NPO Tsentral’nyi Kotloturbinnyi Institut”, St. Petersburg, Russia;(3) Pratt and Whitney Co., East Hartford, CT, USA;(4) Baranov Central Institute of Aviation Motors, Moscow, Russia |
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| Abstract: | ![]()
Specific features of thermal fatigue fracture of a monocrystalline alloy used in manufacturing of rotor blades of gas-turbine units are investigated. The dependences of the number of cycles to failure on the crystallographic orientation of the material, maximum temperature in a cycle, temperature range, and stress concentration are established. The effects of the pores and processes of recrystallization on the degree of thermal fatigue damage are analyzed. __________ Translated from Problemy Prochnosti, No. 5, pp. 54–71, September–October, 2008. |
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| Keywords: | thermal fatigue monocrystalline alloy number of cycles to failure crystallographic orientation fracture mode |
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