کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796523 | 1514948 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on the formation and stability of nano-crystalline Al50Cu28Fe22 alloy synthesized through high-energy ball milling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Studies on the formation and stability of nano-crystalline Al50Cu28Fe22 alloy synthesized through high-energy ball milling Studies on the formation and stability of nano-crystalline Al50Cu28Fe22 alloy synthesized through high-energy ball milling](/preview/png/9796523.png)
چکیده انگلیسی
This work reports the formation of nano-crystalline Al50Cu28Fe22 alloy by high-energy ball milling. The Al50Cu28Fe22 alloy, synthesized through slow cooling of the molten alloy, was subjected to milling in an attritor mill at 400 rpm for 5 h, 10 h, 20 h, 40 h and 80 h with a ball to powder ratio of 40:1 in hexane medium. The X-ray diffraction and transmission electron microscopy observation of milled samples revealed that the milling duration of 5-40 h has led to the formation of nano-phase. The average crystallite size has been found to be of â¼17 nm. When the nano-crystalline alloy was vacuum annealed at a temperature of â¼500 °C for 5-20 h, new structural phases corresponding to the superstructures of crystallite size around 100-200 nm of the parent nano-crystalline phase were identified. The superstructures have been found to correspond to the simple cubic structure with asc = â2ap and the face centred cubic structure with afcc = 2ap (ap: lattice parameter of parent nano-crystalline alloy). It has been proposed that the formation of two different types of superstructures resulting from ball milling followed by annealing is possibly governed by the minimization of free energy of phase constituents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 393, Issues 1â2, 25 February 2005, Pages 366-373
Journal: Materials Science and Engineering: A - Volume 393, Issues 1â2, 25 February 2005, Pages 366-373
نویسندگان
T.P. Yadav, N.K. Mukhopadhyay, R.S. Tiwari, O.N. Srivastava,