کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1577065 | 1514787 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Boron segregation to austenite grain boundary in low alloy steel measured by aberration corrected STEM–EELS
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Boron concentration profile around prior austenite grain boundaries in Fe-0.05C–0.5Mo–0.001B (mass%) is examined by using aberration corrected STEM–EELS. Tilt series measurements of line analysis with a thin specimen (<30 nm) and the principal component analysis (PCA) are performed to obtain the precise distribution of boron around the boundary. The concentration on the grain boundary reaches beyond 8 at% and the distribution width is about 1.2 nm. The effects of the boundary inclination and the specimen thickness are also examined by calculation based on the Gaussian broadening model. The obtained concentration profile implies that the boron segregation in the present material is formed by ‘non-equilibrium segregation mechanism’.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 556, 30 October 2012, Pages 358–365
Journal: Materials Science and Engineering: A - Volume 556, 30 October 2012, Pages 358–365
نویسندگان
Genichi Shigesato, Taishi Fujishiro, Takuya Hara,