Alloying of pure magnesium with Mg 33.3 wt-%Zr master alloy
| Autor: | Ma Qian, M. T. Frost, L. Zheng, D. Graham, David H. StJohn |
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| Rok vydání: | 2003 |
| Předmět: |
Zirconium
Materials science Magnesium Mechanical Engineering Alloy Zirconium alloy Metallurgy chemistry.chemical_element engineering.material Atmospheric temperature range Condensed Matter Physics Microstructure Grain size chemistry Mechanics of Materials engineering General Materials Science Dissolution |
| Zdroj: | Materials Science and Technology. 19:156-162 |
| ISSN: | 1743-2847 0267-0836 |
| DOI: | 10.1179/026708303225010849 |
| Popis: | To capitalise on the strengthening potential of zirconium as a potent grain refiner for magnesium alloys, the mechanisms of adding zirconium to magnesium and its subsequent grain refining action need to be understood. Using a Mg- 33.3Zr master alloy (Zirmax supplied by Magnesium Elektron Ltd) as a zirconium alloying additive, the influence of different alloying conditions on the dissolution of zirconium in magnesium was investigated. It was found that owing to the highly alloyable microstructure of Zirmax, the dissolution of zirconium was generally complete within a few minutes in the temperature range 730 to 780°C. Prolonging and/or intensifying stirring were found to have no conspicuous influence on further enhancing the dissolution of zirconium. In all cases studied, the average grain size increased with increasing holding time at temperature while the total zirconium content decreased. The finest grain structure and highest total zirconium content corresponded to sampling immediately after sti... |
| Databáze: | OpenAIRE |
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