کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1625382 1516428 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanocomposites obtained by mechanical alloying in Fe–Al–Ti–C system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Nanocomposites obtained by mechanical alloying in Fe–Al–Ti–C system
چکیده انگلیسی

We investigated the reactive milling process in the Fe–Al–Ti–C system. The composite powders with Fe(Al) solid solution matrix reinforced by 50%, 30% and 10% of TiC carbide, depending on the Ti and C content in the starting powder mixture, were produced throughout this process. In the case of the process which yielded composite containing 50% of TiC, abruptly, in the first step of milling, a significant amount of TiC carbide and of partially ordered Fe(Al) solid solution has been formed. In two other cases the first stage of the milling brought about formation of disordered Fe(Al) solid solution, while TiC was developed later. The final products of performed milling processes were nanocrystalline, with the estimated mean crystallite size in the range of 8–15 nm and of about 18 nm for Fe(Al) and TiC, respectively. Heating of the produced powders in the calorimeter up to 720 °C caused ordering of the Fe(Al) solid solution and its transformation into an FeAl intermetallic. Limited growth of grains up to about 20 nm as well as a decrease of the mean lattice strain also took place during heating.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 448, Issues 1–2, 10 January 2008, Pages 227–233
نویسندگان
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