کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1621194 1005745 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon diffusion behavior in molybdenum at relatively low temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Carbon diffusion behavior in molybdenum at relatively low temperatures
چکیده انگلیسی

Purpose of this study is to investigate the carbon diffusion behavior in pure molybdenum at relatively low temperatures by means of fracture surface observation. Carbon addition was performed at a temperature of 1273–1373 K with the heating time being changed. Fracture surface of the specimen after carbon addition was examined using SEM and the carbon diffusion distance was estimated from the change of fracture mode as a function of the distance from the surface. Results are summarized as follows. First, the carbon diffusion distance increased approximately linearly with the increase of heating time from 1.2 to 10.8 ks. This relationship does not agree with that obtained at much higher temperatures. From Arrhenius plots of the slope of the straight line and the temperature, activation energy was calculated (155 kJ/mol). Secondly, the carbon diffusion distance estimated in this study was generally larger than that simulated using the data of Rudman, particularly at a longer heating time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 489, Issue 1, 7 January 2010, Pages 42–46
نویسندگان
, , , ,