Sliding wear-induced microstructure evolution of nanocrystalline and coarse-grained AZ91D Mg alloy |
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| Authors: | HQ Sun YN Shi M-X Zhang |
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| Affiliation: | 1. Centro de Investigación, Innovación y Desarrollo de Materiales – CIDEMAT, Universidad de Antioquia, Carrera 53 N°61-30, Medellín, Colombia;2. Diseño Sostenible en Ingeniería Mecánica– DSIM, Escuela Colombiana de Ingeniería Julio Garavito, AK45 No. 205-59, Bogotá, Colombia;3. Grupo de Investigación de Estudios en Diseño - GED, Facultad de Diseño Industrial, Universidad Pontificia Bolivariana, Sede Medellín, Circular 1 N° 70-01, Medellín, Colombia;4. Tribology and Interfacial Chemistry Group – TIC, École Polytechnique Fédérale de Lausanne, Route Cantonale, 1015 Lausanne, Suiza |
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| Abstract: | Wear behavior of nanocrystalline (NC) AZ91D Mg alloy generated by surface mechanical attrition treatment and the corresponding coarse-grained (CG) samples subjected to dry sliding wear at different sliding velocities were investigated. The subsurface microstructure evolution of these two samples was analyzed by cross-sectional transmission electron microscope. The microstructure of NC layer was almost unchanged while grain refinement into nanometer scale was identified for CG sample at high velocity, which contributed to the wear behavior of both NC and CG samples. |
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