{"title":"High pressure structural study of quasicrystalline AlMn","authors":"E. Johnson, J. Staun Olsen, J.V. Wood, L. Gerward","doi":"10.1016/0025-5416(88)90365-5","DOIUrl":null,"url":null,"abstract":"<div><p>High pressure X-ray diffraction studies have been performed on rapidly solidified AlMn alloys (35 and 40 wt.% manganese) containing the quasicrystalline phase. Pressure experiments were undertaken using a diamond anvil cell, and X-ray diffraction analysis in the energy dispersive mode was performed using the synchrotron radiation facility at HASYLAB-DESY in Hamburg. Both the quasicrystalline phase and the AlMn α phase were found to have stable structures for pressures up to 47 GPa and they showed reversible behaviour for decreasing pressures. Using a Murnaghan-type equation of state, the best values of the bulk modulus and its pressure derivative for the icosahedral phase were found to be B<sub>0</sub> = 146 GPa ∓ 10 GPa and B′<sub>0</sub> = 1.7 ∓ 0.5 respectively. The bulk modulus and the pressure derivative for the α phase are B<sub>0</sub> = 85 GPa ∓ 2GPa and B<sub>0</sub><sup>′</sup> = 2.9 ∓ 0.1 respectively.</p></div>","PeriodicalId":100890,"journal":{"name":"Materials Science and Engineering","volume":"99 1","pages":"Pages 403-406"},"PeriodicalIF":0.0000,"publicationDate":"1988-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0025-5416(88)90365-5","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0025541688903655","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
High pressure X-ray diffraction studies have been performed on rapidly solidified AlMn alloys (35 and 40 wt.% manganese) containing the quasicrystalline phase. Pressure experiments were undertaken using a diamond anvil cell, and X-ray diffraction analysis in the energy dispersive mode was performed using the synchrotron radiation facility at HASYLAB-DESY in Hamburg. Both the quasicrystalline phase and the AlMn α phase were found to have stable structures for pressures up to 47 GPa and they showed reversible behaviour for decreasing pressures. Using a Murnaghan-type equation of state, the best values of the bulk modulus and its pressure derivative for the icosahedral phase were found to be B0 = 146 GPa ∓ 10 GPa and B′0 = 1.7 ∓ 0.5 respectively. The bulk modulus and the pressure derivative for the α phase are B0 = 85 GPa ∓ 2GPa and B0′ = 2.9 ∓ 0.1 respectively.
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