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Kinetics of isothermal structural relaxation in metallic glasses measured by real-time diffraction using synchrotron radiation

机译：使用同步加速器辐射通过实时衍射测量的金属玻璃的等温结构弛豫动力学

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摘要

Quantitative measurements of the excess free volume in Pd40Cu30Ni10P20 and Cu55Zr30Ti10Pd5 metallic glasses during in situ isothermal annealing at various temperatures are used to identify physical parameters of structural relaxation in metallic glasses and to discuss proposed models describing this process. The free-volume model is found to provide a simple and predictive description for structural relaxation phenomena. We show that structural relaxation kinetics follows a second-order law in a satisfactory manner. The activation energy for relaxation is found to depend on annealing temperature and the extent of structural relaxation.View full textDownload full textKeywordsmetallic glasses, structural relaxation, free volume, synchrotron radiation, X-ray diffractionRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2010.537701
机译：定量测量Pd 40 Cu 30 Ni 10 P 20 和Cu 55中的过量自由体积 Zr 30 Ti 10 Pd 5 金属玻璃在不同温度下的原位等温退火过程中用于识别结构弛豫的物理参数并讨论提议的描述此过程的模型。发现自由体积模型可为结构松弛现象提供简单且可预测的描述。我们表明，结构弛豫动力学遵循令人满意的方式遵循二阶定律。发现弛豫的活化能取决于退火温度和结构弛豫的程度。查看全文下载全文关键词金属玻璃，结构弛豫，自由体积，同步辐射，X射线衍射相关的var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，services_compact：“ citeulike，网络振动，微博，technorati，美味，linkedin，facebook，stumbleupon，digg，google，更多”，发布号：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2010.537701

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