کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
829306 1470339 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microalloying effects on microstructure and mechanical properties of 18Cr–2Mo ferritic stainless steel heavy plates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Microalloying effects on microstructure and mechanical properties of 18Cr–2Mo ferritic stainless steel heavy plates
چکیده انگلیسی


• We focus on Nb–V stabilized 18Cr–2Mo ferritic stainless steel with/without Ti.
• We compare microstructures and mechanical properties of steels using several methods.
• Modification of microstructure that Ti induces reduces toughness of FSS heavy plates.
• Properties improvement Nb–V steel brings is important for application of FSS plates.

The microstructure, including grain size and precipitation, tensile strength and Charpy impact toughness of (Nb + V) 18Cr–2Mo ferritic stainless steel heavy plates with/without Ti were investigated by means of optical microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction and standard tensile strength and Charpy impact toughness testing. It was found that for 18Cr–2Mo heavy plate, a good combination of Nb–V stabilized method without Ti induces refinement of grain sizes due to the precipitation of amounts of fine Nb carbonitrides and V nitrides. Meanwhile, the mechanical testing results indicate that optimal transformation of grain size, precipitation that Nb–V composition system brings to 18Cr–2Mo heavy plate is beneficial to improvement of strength and impact toughness.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 58, June 2014, Pages 518–526
نویسندگان
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