کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1560350 1513910 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase-field modeling the effect of misfit on the precipitation of the second-phase particles and grain coarsening
ترجمه فارسی عنوان
مدل سازی فاز فیزیکی اثر فرسایش بر روی بارش ذرات دوم فاز و گرد و غبار دانه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی


• The model overcomes the artificial second-phase particles set beforehand.
• The increasing misfit restrains the precipitation of the second-phase particles.
• Large elastic modulus leads to particles coarsening fast along the soft direction.
• The rod-like particles make the grain size more uniform.
• The rod-like particles accelerate the coarsening.

A modified phase-field model has been used to study the precipitation of the second-phase particles and the coarsening of grains under the influence of lattice mismatch. The elastic strain energy caused by misfit is taken into account, and the force equilibrium equation is solved using the iterative-perturbation method. The simulations show that the morphology of the second-phase particles is significantly influenced by the misfit, and the elastic stress blocks the precipitation of the particles. With the increase of the elastic modulus, the process of grain coarsening changes, and the morphology of the second-phase particle gradually transforms from globular to square and rod. The interactions between solute concentration and the misfit are cooperative, which together control the size of grains.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 100, Part B, 1 April 2015, Pages 166–172
نویسندگان
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