کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458897 | 1516178 | 2017 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grain size stabilization and strengthening of cryomilled nanostructured Cu 12Â at% Al alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Grain size stabilization and strengthening of cryomilled nanostructured Cu 12Â at% Al alloy Grain size stabilization and strengthening of cryomilled nanostructured Cu 12Â at% Al alloy](/preview/png/5458897.png)
چکیده انگلیسی
Nanocrystalline Cu12 at% Al alloy was synthesized by high energy ball milling under cryogenic condition. The alloy was then annealed up to 900 °C (or 0.87 Tm). Phase and microstructural evaluation were carried out by X-ray diffraction (XRD), transmission electron microscopy (TEM) and the mechanical property was investigated by microhardness testing. Results show that at elevated temperatures grain growth of Cu 12 at% Al alloy is much less than pure Cu prepared under same condition. The microhardness of the alloy decreases from 2.91 GPa to 2.73 GPa (â¼6% decrease) after annealing at 900 °C. Superior thermal stability at high temperature was ascribed to the grain boundary pinning by nano-scale intermetallic particles. Kinetically stabilized grain size and hardness show good agreement with theoretical predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 716, 5 September 2017, Pages 197-203
Journal: Journal of Alloys and Compounds - Volume 716, 5 September 2017, Pages 197-203
نویسندگان
Somraj Chakravarty, Koushik Sikdar, Shudhansu S. Singh, Debdas Roy, Carl C. Koch,