The initial strength advantage obtained by the bainitic microstructure, gained by quenching, is lost via cyclic softening. The introduction of a hold period into the cyclic waveform, regardless of its type or duration, significantly reduces fatigue life. Compared to results obtained in air, vacuum enhances life at least two-fold. Both crack initiation and propogation are inhibited in the absence of oxidation. Environmental interaction may well be more important than creep damage in the low-cycle fatigue regime.
|Original language||English (US)|
|Number of pages||5|
|Journal||American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP|
|State||Published - 1986|
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Mechanical Engineering