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INFLUENCE OF MN ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF MOULD-CAST Al – Sc – Zr-BASED ALLOY
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vlach, Martin Stulíková, Ivana Smola, Bohumil Dhritti Neubert, Volkmar |
| Copyright Year | 2010 |
| Abstract | Specimens of two mould-cast aluminium Al-Mn-Sc-Zr alloys with various Mn and Zr content were isochronally annealed in the temperature range of 20 °C – 570 °C. Precipitation reaction was followed with electrical resistivity and microhardness (HV0.3) measurements. Some states of alloys studied were also examined by using metallography, transmission electron microscopy and electron diffraction. Relative resistivity changes and microhardness of both alloys exhibit similar dependence on annealing temperature. The distinct microhardness increase observed after annealing above 270 °C corresponds excellently to the fastest resistivity decrease. The peak microhardness is reached due to precipitation of the Al3Sc particles. Microhardness of both materials after annealing up to 570 °C attains approximately the microhardness value of mould-cast materials. The Mn-addition very probably does not influence the solid solution decomposition of ternary Al–Sc–Zr system during isochronal annealing of the studied mould-cast Al–Mn–Sc–Zr-based alloys. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://konference.tanger.cz/data/metal2010/sbornik/lists/papers/102.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
