کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1650696 1517336 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of niobium on the as-cast microstructure of hypereutectic high chromium cast iron
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effect of niobium on the as-cast microstructure of hypereutectic high chromium cast iron
چکیده انگلیسی

The effect of niobium element on the as-cast microstructure of the hypereutectic high chromium cast irons containing 4.0 wt.% C and 20.0 wt.% Cr was studied by means of the optical microscopy, the scanning electron microscopy, the X-ray diffraction, the energy dispersive X-ray spectrometry, the electron probe microanalyzer and the Leica image analyzer. With the addition of Nb, NbC carbides are formed in the hypereutectic high chromium cast irons, the carbides are refined and the shape of the primary M7C3 carbides becomes isotropic. The addition of niobium reduces the carbon content of the liquid due to the formation of the first precipitated NbC, thus reduces the volume fraction and size of the primary M7C3 carbides.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 62, Issues 6–7, 15 March 2008, Pages 857–860
نویسندگان
, , , ,