Abstract
An extensive study on the fatigue performance of friction stir welded DH36 steel was carried out. The main focus of this experimental testing programme was fatigue testing accompanied by tensile tests, geometry measurements, hardness and residual stress measurements, and fracture surface examination. The S-N curve for friction stir butt welded joints was generated and compared with the International Institute of Welding recommendations for conventional fusion butt welds. Friction stir welds of marine grade steel exceeded the relevant rules for fusion welding. This newly developed S-N curve is being proposed for use in the relevant fatigue assessment guidelines for friction stir welding of low alloy steel. Fracture surfaces were examined to investigate the fatigue failure mechanism, which was found to be affected by the processing features generated by the friction stir welding tool.
| Original language | English |
|---|---|
| Pages (from-to) | 162-170 |
| Number of pages | 9 |
| Journal | International Journal of Fatigue |
| Volume | 81 |
| Early online date | 13 Aug 2015 |
| DOIs | |
| Publication status | Published - Dec 2015 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 14 Life Below Water
Keywords
- friction stir welding
- low alloy steel
- fatigue testing
- residual stresses
- fracture surface analysis
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Projects
- 1 Finished
-
HILDA (FP7 Transport)
Galloway, A. (Principal Investigator)
European Commission - FP7 - Cooperation only
1/09/12 → 31/08/15
Project: Research
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