Investigation on wear properties of AZ31-MWCNT nanocomposites fabricated through mechanical alloying and powder metallurgy
| Autor: | Raghunath Kuppusamy, Hanumantha Rao, Jayakumar Jayaraman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Nanocomposite
Materials science high energy ball milling powder metallurgy process az31-mwcnt composites 02 engineering and technology 021001 nanoscience & nanotechnology mechanical alloying 020303 mechanical engineering & transports 0203 mechanical engineering Powder metallurgy multi-wall carbon nanotubes Materials Chemistry Ceramics and Composites TA401-492 Composite material 0210 nano-technology Materials of engineering and construction. Mechanics of materials wear properties |
| Zdroj: | Science and Engineering of Composite Materials, Vol 23, Iss 1, Pp 61-66 (2016) |
| ISSN: | 2191-0359 0792-1233 |
| Popis: | The wear properties of Mg alloy AZ31 (Al 3%, Zn 1%, rest Mg) nanocomposites reinforced with multi-wall carbon nanotubes (MWCNTs) were studied by conducting experiments on pin-on-disc wear test apparatus. The composites were fabricated by powder metallurgy technique by homogeneously reinforcing variable percentages of MWCNTs (0.33 wt%, 0.66 wt%, and 1.0 wt%) into Mg alloy AZ31 matrix through mechanical alloying. The effect of varying percentages of MWCNTs on the wear properties of AZ31-MWCNT nanocomposites and the mechanism behind that were investigated through scanning electron microscope and energy dispersive spectroscope analysis. The microstructure investigation revealed that an increase in reinforcement of MWCNTs in AZ31 alloy increased the hardness and reduced the wear rate of the composites with 0.33 wt% and 0.66 wt% due to homogeneous distribution and high interfacial strength between AZ31 and MWCNTs. However, with the addition of 1.0 wt% MWCNTs to AZ31 alloy led to high agglomeration of MWCNTs, resulting in poor interfacial strength and weak bonding between AZ31 and conglomerated MWCNTs, subsequently increasing the wear rate. |
| Databáze: | OpenAIRE |
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