Abstract
We investigated small fatigue crack propagation in Fe-30Mn-3Si-3Al and Fe-23Mn-0.5C twinning-induced plasticity steels at 30 Hz at ambient temperature by using the replica method with a rotating bending fatigue test machine. The most important difference between the two steels was observed in the non-propagation behavior of small fatigue cracks at the fatigue limits. The Fe-30Mn-3Si-3Al steel did not show fatigue crack non-propagation even at 108 cycles, whereas the Fe-23Mn-0.5C did after 107 cycles, likely because of the occurrence of dynamic strain aging associated with Mn-C coupling.
Original language | English |
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Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | International Journal of Fatigue |
Volume | 94 |
DOIs | |
Publication status | Published - 2017 Jan 1 |
Externally published | Yes |
Keywords
- Austenitic steel
- Dynamic strain aging
- High cycle fatigue
- Non-propagation of small fatigue cracks
- Optical microscopy
ASJC Scopus subject areas
- Modelling and Simulation
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering