Abstract
In this study, a new fatigue testing method under shear and axial loading was developed for small specimens (3mm long and 0.3mm thick). The method was applied to a single crystal of pure iron and extra-low carbon steel in order to investigate the effect of shear and normal stress on cyclic slip activity. The specimen was sufficiently small to be prepared from a single crystal, aiming at a specific slip system in the shear loading direction. Moreover, the specimen had a single edge notch, which was designed to generate both pure shear stress and normal stress. Using this testing method, shear fatigue strength with a static normal stress on the slip system [111] was evaluated, and the fatigue strength was compared with that of polycrystalline ferrite steel with static axial loading.
Original language | English |
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Pages (from-to) | 167-174 |
Number of pages | 8 |
Journal | Procedia Engineering |
Volume | 160 |
DOIs | |
Publication status | Published - 2016 |
Event | 18th International Colloquium on Mechanical Fatigue of Metals, ICMFM XVIII 2016 - Gijon, Spain Duration: 2016 Sept 5 → 2016 Sept 6 |
Keywords
- Multiaxial fatigue
- Shear fatigue strength
- Single-crystal iron
- Slip plane
- Small specimen
ASJC Scopus subject areas
- General Engineering