کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448611 988678 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Behavior of (Ti, Nb)(C, N) complex particle during thermomechanical cycling in the weld CGHAZ of a microalloyed steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Behavior of (Ti, Nb)(C, N) complex particle during thermomechanical cycling in the weld CGHAZ of a microalloyed steel
چکیده انگلیسی

This study aims to investigate the effect of deformation (stress and strain) on the coarsening kinetics of a (Ti, Nb)(C, N) complex particle during isothermal and continuous thermomechanical cycles in the weld coarse-grained heat-affected zone (CGHAZ) of a Ti + Nb microalloyed steel. Results in isothermal coarsening tests showed that the coarsening rate was enhanced by deformation under both compressive and tensile stress: it was enhanced mainly owing to the increased diffusivity of solute atoms. Then the compressive stress was found to be more effective than tensile stress. Interestingly, despite the increase in the coarsening rate, the mean particle size in the weld CGHAZ, after continuous thermomechanical cycle, decreased more than it did in the simple thermal cycle. This was because of enhancement of the precipitation of fine particles by increased precipitation kinetics under deformation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 57, Issue 7, April 2009, Pages 2311–2320
نویسندگان
, ,