Influence of Deformation Controlled Strain Rate on Tensile and Compression Behaviour of Magnesium and Steel Wire
| Autor: | Klaudia Klimaszewska, Franz Berge, Rudolf Kawalla, Madlen Ullmann, Grzegorz Korpala, Thorsten Henseler |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Traverse Mechanical Engineering Metallurgy 02 engineering and technology Strain rate 021001 nanoscience & nanotechnology Condensed Matter Physics Compression (physics) 01 natural sciences Mechanics of Materials 0103 physical sciences Ultimate tensile strength General Materials Science Slow strain rate testing Magnesium alloy Elongation Deformation (engineering) Composite material 0210 nano-technology |
| Zdroj: | Materials Science Forum. 892:89-96 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.892.89 |
| Popis: | This article demonstrates the difference in the flow curves of an AZ31 magnesium alloy and S235JR structural steel wire caused by non-linear strain rates during uniaxial tensile and compression testing at elevated temperatures. Throughout tensile deformation, the traverse velocity of the testing machine has to be adapted according to the current elongation of the specimen, thus accelerating, to ensure a constant strain rate during the admission of the stress-strain curve. The equivalent is necessary during compression testing, where the traverse velocity of the testing machine needs to decelerate ensuring a constant strain rate. Nevertheless, tensile and compression tests are performed with constant traverse velocity, which lead to divergent flow curves in comparison to deformation controlled traverse velocities. The results of the research show the difference in flow behaviour of magnesium and steel wire, when the temperature and strain rate are varied in conjunction with constant and deformation controlled traverse velocities. |
| Databáze: | OpenAIRE |
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