Damping capacity of sand cast magnesium alloy AZ91
| العنوان: | Damping capacity of sand cast magnesium alloy AZ91 |
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| المؤلفون: | S. Erchov, P. Gabor, K. Eigenfeld, Werner Riehemann, O. Podobed |
| المصدر: | Materials Science and Technology. 18:198-200 |
| بيانات النشر: | Informa UK Limited, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Materials science, Annealing (metallurgy), Magnesium, Mechanical Engineering, Logarithmic decrement, Metallurgy, chemistry.chemical_element, Condensed Matter Physics, Microstructure, Damping capacity, chemistry, Mechanics of Materials, General Materials Science, Lamellar structure, Magnesium alloy, Eutectic system |
| الوصف: | Measurements of damping properties have been carried out on sand cast specimens of the most widely used commercial magnesium alloy AZ91. Damping properties of specimens in both as cast and heat treated (T4 and T6) conditions were determined by measurements of the logarithmic decrement of free bending beam vibration at various frequencies. The best damping properties were found in the as cast specimens. This is directly related to the microstructure, which consists of α magnesium, large inclusions of β phase (Mg17Al12), as well as lamellar eutectoid Mg17Al12 precipitating as a result of low cooling rate. For homogenised and annealed specimens, the maxima of the hardness and of the damping capacity as a function of annealing time was found. The measurements of the logarithmic decrement can be explained using a model of Granato and Lucke. |
| تدمد: | 1743-2847 0267-0836 |
| DOI: | 10.1179/026708301225000581 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::d2c0b2c6ee1b5bdd3f043ba51cb20661 https://doi.org/10.1179/026708301225000581 |
| رقم الانضمام: | edsair.doi...........d2c0b2c6ee1b5bdd3f043ba51cb20661 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17432847 02670836 |
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| DOI: | 10.1179/026708301225000581 |