Low cycle fatigue properties of extruded Mg10GdxNd alloys
Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
Authors
The Rare Earth (RE) containing magnesium alloys MglOGd and MglOGdlNd show after extrusion very good low cycle fatigue (LCF) properties. Considering extruded AZ31 as a possible benchmark alloy, life times as a function of LCF stress values are similar to the alloys investigated in this study. Mechanical properties determined in tension and compression show smaller values for both RE containing alloys. Therefore the LCF behavior is analyzed by the stress-strain hysteresis evaluation resulting in cyclic creep and plastic hardening or softening. LCF tests were strain controlled with amplitude of 0.5 % and 0.8 % at a frequency of 5 Hz. The fracture surfaces are examined by SEM, where the area of crack propagation and overload were of main interest. Micrographs of longitudinal cross sections reveal twinning along the region of crack propagation. The correlation between the amount of twins and the number of cycles is discussed.
| Original language | English |
|---|---|
| Title of host publication | Magnesium Technology 2014 - Held During TMS 2014 143rd Annual Meeting and Exhibition |
| Editors | Martyn Alderman, Michele V. Manuel, Nobert Hort, Neale R. Neelameggham |
| Number of pages | 6 |
| Publisher | The Minerals, Metals & Materials Society |
| Publication date | 02.2014 |
| Pages | 115-120 |
| ISBN (print) | 9781118888162 |
| DOIs | |
| Publication status | Published - 02.2014 |
| Externally published | Yes |
| Event | 143rd Annual Meeting and Exhibition of Magnesium Technology 2014 - TMS 2014 - San Diego, CA, United States Duration: 16.02.2014 → 20.02.2014 Conference number: 143 https://www.tms.org/meetings/annual-14/am14proceedings.aspx |
- Extruded, Low cycle fatigue, Magnesium alloy, Rare Earth
- Engineering