کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1607754 | 1516241 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical properties of Y3âxNdxBa5âxCaxCu8O18âδ samples
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Vickers microhardness measurements of Y3âxNdxBa5âxCaxCu8O18âδ samples, 0.00 â¤Â x â¤Â 0.40, were carried out at room temperature at different applied loads varies from 0.25 N to 10.00 N. Vickers microhardness decreases as the substitution content increases, as well as it decreases as the applied loads increase. The results were analyzed using different models such as Meyer's law, Hays-Kendall (HK) approach, elastic/plastic deformation (EPD) model, proportional specimen resistance (PSR) model and modified proportional specimen resistance (MPSR) model. The analysis shows that the MPSR model is the most suitable one to describe the load independent microhardness for Y3âxNdxBa5âxCaxCu8O18âδ superconducting samples at high load. Some important mechanical parameters such as Young's modulus (E), yield strength (Y), fracture toughness (Kf) and brittleness index (Bi) were calculated as a function of substitution content. The results show that they decrease by increasing the substation content for Y3âxNdxBa5âxCaxCu8O18âδ samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 652, 15 December 2015, Pages 158-166
Journal: Journal of Alloys and Compounds - Volume 652, 15 December 2015, Pages 158-166
نویسندگان
M.ME. Barakat, A.I. Abou-Aly, R. Awad, N.S. Aly, S. Ibrahim,