کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580277 | 1514834 | 2009 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of aluminum-based nanocomposites with ultra-high strength
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کلمات کلیدی
Aluminium alloys - آلیاژهای آلومینیومScanning transmission electron microscopy (STEM) - میکروسکوپ الکترونی انتقال (STEM)Transmission electron microscopy (TEM) - میکروسکوپ الکترونی عبوریMetal matrix composites (MMC) - کامپوزیت ماتریکس فلزی (MMC)Particulate-reinforced composites - کامپوزیت های تقویت شده با بخار
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of aluminum-based nanocomposites with ultra-high strength Investigation of aluminum-based nanocomposites with ultra-high strength](/preview/png/1580277.png)
چکیده انگلیسی
Previously, we reported ultra-high compressive strength (up to 1065Â MPa) for a bulk aluminum-based metal matrix nanocomposite [J. Ye, B.Q. Han, Z. Lee, B. Ahn, S.R. Nutt, J.M. Schoenung, Scr. Mater. 53 (2005) 481-486]. The mechanisms that are responsible for this significant strength increase over conventional materials (â¼225Â MPa, H. Zhang, M.W. Chen, K.T. Ramesh, J. Ye, J.M. Schoenung, E.S.C. Chin, Mater. Sci. Eng. A: Struct. Mater. Prop. Microstruct. Process. 433 (2006) 70-82) and even over other equivalent nanocrystalline materials (â¼470Â MPa, R.G. Vogt, Z. Zhang, T.D. Topping, E.J. Lavernia, J.M. Schoenung, J. Mater. Process. Technol., 209 (2009) 5046-5053) have not been studied in detail. The material consists of boron carbide reinforcement in a matrix with both coarse-grained and ultrafine-grained Al 5083; the processing introduces secondary phase dispersoids and dislocations. In this work, we systematically investigate the microstructural origins and the strengthening mechanisms, including Hall-Petch, Orowan and Taylor, as appropriate to each phase constituent. To provide insight into the relative contributions of these mechanisms, we calculate overall strength using rule-of-mixtures, modified shear-lag model, and Mori-Tanaka method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issues 1â2, 15 December 2009, Pages 305-316
Journal: Materials Science and Engineering: A - Volume 527, Issues 1â2, 15 December 2009, Pages 305-316
نویسندگان
Y. Li, Y.H. Zhao, V. Ortalan, W. Liu, Z.H. Zhang, R.G. Vogt, N.D. Browning, E.J. Lavernia, J.M. Schoenung,