FATIGUE CRACKING MECHANISMS OF TITANIUM ALLOY VT3-1 IN VERY-HIGH-CYCLE-FATIGUE REGIME
Abstract
Investigations and tests of specimens of VT3-1 titanium alloy were done in Very-High-Cycle-Fatigue regime. Specimens were manufactured from compressor disks of D30-KU engine, and tests under frequency 20 kHz performed on the special test-bed in laboratory of Paris University «ITMA». Crack origination takes place subsurface from different material structural inhomogeneities. Fatigue origin has fine-granular area in the case of specimen tests under symmetrical cycle of cyclic loads but in the case of cyclic tension, origin has flat facet because of a-phase splitting. Experimental data dispersion under the constant stress level covered three orders.
About the Authors
A. A. Shanyavskiy
ГосЦентр безопасности полетов
Russian Federation
Russian Federation
C. Bathia
Парижскbq университет
Russian Federation
Russian Federation
A. D. Nikitin
МАТИ
Russian Federation
Russian Federation
T. Palin-Luk
объединеннsq университет ЕНСАМ
Russian Federation
Russian Federation
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Review
For citations:
Shanyavskiy A.A., Bathia C., Nikitin A.D., Palin-Luk T. FATIGUE CRACKING MECHANISMS OF TITANIUM ALLOY VT3-1 IN VERY-HIGH-CYCLE-FATIGUE REGIME. Civil Aviation High Technologies. 2014;(208):22-26. (In Russ.)
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