کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1613761 1005601 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preliminary study on kinetics of carbon partitioning in a high Ni Q&P steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Preliminary study on kinetics of carbon partitioning in a high Ni Q&P steel
چکیده انگلیسی

Quenching and Partitioning (Q&P) treatment is a novel process to produce advanced high-strength steel. It is relatively difficult to investigate kinetic processes of the partitioning which normally complete after tens of seconds. Since the Mf (martensitic transformation finish temperature) of medium-carbon steels with high Ni content (9.8 wt%) is under room temperature, the kinetics of carbon partitioning can be studied around room temperature. In this study the carbon partitioning for a high Ni steel was investigated by means of Differential Scanning Calorimetry (DSC), Dynamic Mechanical Analyzer (DMA) and X-ray Diffraction (XRD). The activation energy of carbon partitioning estimated from the DSC is 1.02 eV (98 kJ/mol) which is comparable with DMA result. The frequency dependence anelastic peaks observed in DMA measurement was also discussed in correlation with Snoek-Koster-like relaxation in high strength steels containing considerable residual austenite and martensite phases.


► Partitioning of medium-carbon steels with high Ni content (9.8 wt%) was studied.
► Kinetics of partitioning was investigated by Dynamic Mechanical Analyzer.
► Frequency dependent feature was correlated with Snoek-Koster-like relaxation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 577, Supplement 1, 15 November 2013, Pages S72–S75
نویسندگان
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