کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455118 | 1514635 | 2017 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural evidence of nano-carbides in medium carbon high silicon multiphase steels
ترجمه فارسی عنوان
شواهد مکانیکی نانوکربید ها در فولادهای چند فازی سیلیکون بالا متوسط
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
High silicon steels containing 1.5-2Â wt% silicon are considered to form carbide free bainite. However, the present work shows experimental evidence for the formation of nano-carbides in a series of medium carbon (0.61Â wt%) high silicon (1.71Â wt%) low alloy mixed phase steels with the help of transmission electron microscopy. The nano-carbide formation in bainite is attributed to the formation of inter-critical ferrite during continuous cooling, resulting in partitioning of carbon and silicon at the austenite-ferrite interface, leading to an increase in carbon and decrease in silicon at the austenite side of the interface. Due to diffusionless growth of supersaturated bainitic ferrite lath under para-equilibrium conditions, formation of bainite proceeds with higher carbon and lower silicon, allowing carbide formation in the bainite during subsequent holding at bainitic transformation temperature. Nano-carbides along with mixed phase microstructures are attributed to the excellent combination of high strength and high ductility in the present steels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 708, 21 December 2017, Pages 237-247
Journal: Materials Science and Engineering: A - Volume 708, 21 December 2017, Pages 237-247
نویسندگان
A. Varshney, S. Sangal, Gouthama Gouthama, A.K. Pramanick, K. Mondal,