کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1445334 1509579 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing
ترجمه فارسی عنوان
ریزش و رفتار بارش در فولادهای میکرولیلی با نایوبیوم در طی پردازش ترمومکانیکی
کلمات کلیدی
فولاد میکروالوژی، پردازش حرارتی مکانیکی، سینتیک انحلال رسوب، بارش ناشی از فشار، رشد دانه آستنیت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour during the final finishing passes. For comparative purposes, two experimental 0.06 wt% C steels were studied, one containing 0.03 wt% Nb (Nb steel), and the second containing both 0.03 wt% Nb and 0.02 wt% Ti (Nb–Ti steel). Processing of these steels consisted of a simulated roughing schedule, with the final roughing pass taking place at 850 °C. The strain-induced precipitation intensity in the steels subsequently quenched where characterised using transmission electron microscopy. Following this, the steels were rapidly reheated at a rate of 10 °C/s to a temperature of 1200 °C, held at temperature for various times, and water quenched to room temperature so that both the precipitate dissolution kinetics, together with the austenite grain coarsening kinetics could be established.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 97, 15 September 2015, Pages 392–403
نویسندگان
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