کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1501344 | 993378 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The ideal strength of transition metal diborides TMB2 (TM = Ti, Zr, Hf): Plastic anisotropy and the role of prismatic slip
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The ideal strength of transition metal diborides TMB2 (TM = Ti, Zr, Hf): Plastic anisotropy and the role of prismatic slip The ideal strength of transition metal diborides TMB2 (TM = Ti, Zr, Hf): Plastic anisotropy and the role of prismatic slip](/preview/png/1501344.png)
چکیده انگلیسی
The ideal tensile and shear strengths of TiB2, ZrB2 and HfB2 have been investigated by first-principles stress–strain calculations. Among the studied diborides, TiB2 unexpectedly exhibits the weakest shear strength in the (0 0 0 1) basal plane, comparable to that of ZrB2 and HfB2 in the {101¯0} prismatic planes. Due to the nonlinearity of the stress response at large stains, the plastic anisotropy cannot be derived from elastic constants. Based on the relative stiffness of boron hexagons, a bond length indicator is obtained to characterize the preference for basal or prismatic slip in diborides.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 62, Issue 8, April 2010, Pages 625–628
Journal: Scripta Materialia - Volume 62, Issue 8, April 2010, Pages 625–628
نویسندگان
Xinghong Zhang, Xiaoguang Luo, Jinping Li, Ping Hu, Jiecai Han,