HIGH AND ULTRA ? HIGH CYCLE FATIGUE OF C55 HIGH GRADE CARBON STEELJournal
: Applied Engineering Letters (Vol.1, No. 4)
Publication Date: 2016-12-31
Authors : L. Trško; O. Bokůvka; M. Jambor; F. Nový; A. Bača; Z. Florková;
Page : 111-114
Keywords : C55; High grade carbon steel; high-frequency loading; surface fatigue crack initiation; ultra-high cycle fatigue;
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Article provides experimental results in the field of ultra-high cycle fatigue behaviour of C55 high grade carbon steel obtained at high-frequency loading (f ? 20 kHz, T = 20 ± 10 °C, R = -1).
The results confirm a continuous decrease of fatigue lifetime beyond the conventional fatigue limit. Fatigue fracture surfaces were characterized by surface fatigue crack initiation in both high and ultra-high cycle region, what means that that influence of microstructure defects was not significant enough to cause the sub-surface crack initiation.
Last modified: 2017-02-09 04:01:23