Abstract
Fully-reversed strain-controlled tests have been performed on AZ31B magnesium alloy extrusion at room temperature, 100 °C, and 200 °C. Different fatigue life prediction models including Coffin-Manson-Basquin, Smith-Watson-Topper, and Jahed-Varvani were applied to predict the fatigue life. According to the shape of the hysteresis loops at half-life, by increasing the test temperature to 200 °C, the asymmetric behavior of the magnesium changed to a symmetric shape. No inflection point can be observed in the loops at 200 °C, the mean stress decreases dramatically, and the cyclic softening occurs. Among different models, Jahed-Varvani as an energy-based approach offers the most promising predictions at all the temperatures.
Original language | English |
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Article number | 105803 |
Journal | International Journal of Fatigue |
Volume | 139 |
DOIs | |
Publication status | Published - Oct 2020 |
Keywords
- Magnesium alloys; Low cycle fatigue; High temperature fatigue; Life prediction; Microstructure
- Life prediction
- High temperature fatigue
- Magnesium alloys
- Microstructure
- Low cycle fatigue
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Materials Science(all)
- Industrial and Manufacturing Engineering
- Modelling and Simulation
Fields of Expertise
- Advanced Materials Science