کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10625262 | 989622 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300Â K
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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: Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300Â K Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300Â K](/preview/png/10625262.png)
چکیده انگلیسی
In this study two YBa2Cu3O7âδ bulk superconductors were evaluated, with the aim of analyzing the influence of the processing method (TSMG and Bridgman) and the test temperature on their mechanical behavior. The relationship between their mechanical properties and fracture micromechanisms has also been studied. Both materials were tested at room and at service temperature. TPB tests were carried out to determine their mechanical behavior, strength and toughness. Moreover, one of the two materials, characterized by transversal microstructural anisotropy, was tested in two directions. Hardness of both materials at nano and micro scale was studied. The results show that the mechanical behavior of the materials is controlled by the defects and cracks that have been introduced during the processing of the materials. A good degree of agreement was found between the experimental crack defects detected by means of SEM and those gathered from the fracture mechanical analysis of the experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 8, Part B, September 2014, Pages 12797-12806
Journal: Ceramics International - Volume 40, Issue 8, Part B, September 2014, Pages 12797-12806
نویسندگان
K. Konstantopoulou, J.J. Roa, E. Jiménez-Piqué, M. Segarra, J.Y. Pastor,