کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1500033 993330 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sudden loss of thermal stability in Fe-based nanocrystalline alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Sudden loss of thermal stability in Fe-based nanocrystalline alloys
چکیده انگلیسی

  The inherent instability of nanocrystalline materials with respect to grain growth can be mitigated by adding an atomic species that segregates to the grain boundaries. Our investigations of binary Fe-based alloys show that this method is effective in stabilizing the nanocrystalline state, but only up to about 900 °C. Above this threshold, microstructural stability is suddenly lost. In situ X-ray diffraction measurements incriminate the α-to-γ transformation, and focused ion beam microscopy reveals a growth morphology reminiscent of abnormal grain growth.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 66, Issue 6, March 2012, Pages 390–393
نویسندگان
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