کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1450268 988728 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-energy X-ray measurements of structural anisotropy and excess free volume in a homogenously deformed Zr-based metallic glass
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
High-energy X-ray measurements of structural anisotropy and excess free volume in a homogenously deformed Zr-based metallic glass
چکیده انگلیسی

We have used high-energy X-ray scattering to measure the structural anisotropy and excess free volume in a homogeneously deformed Zr-based metallic glass alloy. The scattering results show that bond length anisotropy is present in the samples following isothermal tensile creep deformation. The average atomic bond length in the direction parallel to the tensile loading axis is larger than that in the direction normal to the loading axis. The magnitude of the bond length anisotropy is found to be dependent on the gradient of macroscopic plastic strain along the gauge length. Furthermore, the scattering results show that the excess free volume also increases with increasing macroscopic plastic strain. Results from differential scanning calorimetry analysis of free volume variations along the gauge length of the creep samples are consistent with results from the X-ray scattering experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 54, Issue 9, May 2006, Pages 2463–2471
نویسندگان
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