کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448454 988674 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metallographic evidence of carbon diffusion in the growth of bainite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Metallographic evidence of carbon diffusion in the growth of bainite
چکیده انگلیسی

There are two paradigms regarding the formation of bainite. One is based on the first stage being rapid, diffusionless growth of acicular ferrite and the subsequent formation of carbide occurring by precipitation from the supersaturated ferrite. An assumption that the first stage occurs as a series of subsequent rapid steps resulting in sub-units plays an important role as an explanation of the not so rapid growth observed macroscopically. The other paradigm is based on the first stage being the formation of acicular ferrite under carbon diffusion and on the subsequent growth of carbide and ferrite side by side. Metallographic observations are presented that support the second paradigm. It is difficult to see how they can be accounted for by the first paradigm, in particular the observation of the shapes of sub-units.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 57, Issue 11, June 2009, Pages 3242–3252
نویسندگان
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