Dual phases strengthening behavior of Mg–10Gd–1Er–1Zn–0.6Zr alloy
| Autor: | Shu-bo Li, Lin-yue Jia, Zhaohui Wang, Zi-jian Yu, Wen-bo Du, Ke Liu |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Morphology (linguistics) Materials science Alloy Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences Phase (matter) 0103 physical sciences Volume fraction Ultimate tensile strength Materials Chemistry engineering Composite material Elongation 0210 nano-technology Strengthening mechanisms of materials |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:635-646 |
| ISSN: | 1003-6326 |
| Popis: | The microstructure evolution and strengthening mechanisms of Mg–10Gd–1Er–1Zn–0.6Zr (wt.%) alloy were focused in the view of the size parameters and volume fraction (fp) of dual phases (long period stacking ordered (LPSO) structures and β′ precipitates). Results show that two types of LPSO phases with different morphologies formed, and the morphology and size of both LPSO phases varied with the solution conditions. However, the volume fraction decreased monotonously with increasing solution temperature, which in turn raised the volume fraction of β′ phase during aging. The alloy exhibited an ultimate tensile strength of 352 MPa, a yield strength of 271 MPa, and an elongation of 3.5% after solution treatment at 500 °C for 12 h and aging at 200 °C for 114 h. In contrast to the LPSO phase, the β′ phase seems to play a more important role in enhancing the yield strength, and consequently, a decreased fLPSO/fβ′ ratio results in an increased yield strength. |
| Databáze: | OpenAIRE |
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