کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455590 | 1514639 | 2017 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Shear softening of Ta-containing metallic glass matrix composites upon dynamic loading
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Shear softening of Ta-containing metallic glass matrix composites upon dynamic loading Shear softening of Ta-containing metallic glass matrix composites upon dynamic loading](/preview/png/5455590.png)
چکیده انگلیسی
The deformation behaviors of in-situ Ti50Zr18Ni5Ta15Be12 bulk metallic glass matrix composites (MGMCs) were investigated upon quasi-static and dynamic loadings. The present MGMCs exhibit good quasi-static mechanical properties, combining high fracture strength (2460Â MPa) with remarkable plasticity (20%) at the strain rate of 5Ã10â4Â sâ1. When the strain rate is higher than 3080Â sâ1, the strain rate effect of the yielding strength has an apparent negative strain rate sensitivity (SRS), which can be ascribed to the deteriorated ability of dendrites to impede the propagation of shear bands and the matrix-dominated fracture related to thermal softening at higher strain rates. Based on their deformation mechanisms, a constitutive relationship is obtained by cooperative shear model (CSM), which is employed to model the dynamic yielding stress behavior. The constitutive equations are established for describing the present MGMCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 704, 17 September 2017, Pages 322-328
Journal: Materials Science and Engineering: A - Volume 704, 17 September 2017, Pages 322-328
نویسندگان
Y.L. Tang, R.F. Wu, Z.M. Jiao, X.H. Shi, Z.H. Wang, J.W. Qiao,