Effects of Loading and Sliding Speed on the Dry Sliding Wear Behavior of Mg-3Al-0.4Si Magnesium Alloy
| Autor: | X. D. Niu, Wei Sun, Xiao Xia Han, T. F. Su, R. G. Li, D. Q. An, Jian An |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Delamination Metallurgy Alloy 02 engineering and technology Surfaces and Interfaces engineering.material 021001 nanoscience & nanotechnology Microstructure Indentation hardness Surfaces Coatings and Films Abrasion (geology) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials engineering Severe plastic deformation Magnesium alloy 0210 nano-technology human activities |
| Zdroj: | Tribology Transactions. 60:238-248 |
| ISSN: | 1547-397X 1040-2004 |
| Popis: | The friction and wear properties of Mg-3Al-0.4Si alloy were investigated using a pin-on-disc tester. Morphologies and compositions of worn surfaces were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS) for identification of the wear mechanisms. Microstructural evolution and hardness change in subsurfaces were analyzed by confocal scanning laser microscopy and hardness testing. The results revealed that the wear behavior of Mg-3Al-0.4Si alloy was classified into two types of wear regimes; that is, mild and severe. In the mild wear regime, wear rates increased at a low slope with increasing load; the corresponding wear mechanisms were oxidation, abrasion, and delamination. In the severe wear regime, wear rates increased rapidly at a high slope with load; the wear mechanisms were severe plastic deformation and surface melting. Analysis of microstructural evolution on the subsurface identified the reason for the transition from mild to severe wear; tha... |
| Databáze: | OpenAIRE |
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