نوع مقاله : مقاله کامل پژوهشی
نویسنده
استادیار، پژوهشکده فناوری نانو و مواد پیشرفته، پژوهشگاه مواد و انرژی، کرج، ایران
چکیده
پیش‌بینی اجزای بافت کریستالی و شبیه‌سازی تغییرات ریزساختار، به مهار و طراحی خواص فیزیکی و مکانیکی نهایی کمک می‌کند. در این تحقیق با به‌کارگیری هم‌زمان شبیه‌سازی المان محدود و مدلسازی پلاستیسیتة کریستالی، یک روش قدرتمند برای پیش‌بینی اجزای بافت کریستالی بعد از نورد گرم معرفی شد. شبیه‌سازی نورد گرم در دو دمای 300 و 500 درجة سلسیوس، انجام و برای محاسبة پارامترهای سخت شدن در شبیه‌سازی پلاستیسیتة کریستالی، از پیچش گرم در دماهای مشابه با نورد گرم استفاده شد. چارچوب ارائه‌شده در این پژوهش، اجزای بافت کریستالی و شدت‌های مرتبط را با دقت پیش‌بینی می‌کند. این موضوع از مقایسة نتایج شبیه‌سازی با نتایج تجربی، نشان داده شد. این رویکرد همچنین منحنی‌های سیلان را به‌درستی و دقیق پیش‌بینی می‌کند. صحت این پیش‌بینی از مقایسة منحنی سیلان شبیه‌سازی‌شده با منحنی سیلان تجربی، ثابت شد. درنهایت، شبیه‌سازی، تأثیر شیب تغییر‌شکل را بر تکامل بافت کریستالی آشکار کرد و نشان داد که اجزای برشی که در اثر اصطکاک ایجاد می‌‌شوند، اجزای بافت کریستالی را در امتداد جهت ND نمونه می‌چرخانند.
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
Simulation of Developed Texture During Warm Rolling of IF Steel
نویسنده [English]
- Alireza Kolahi
Assistant Professor/Research Department of Nano-Technology and Advanced Materials, Materials and Energy Research Center, Meshkindasht, Alborz Province, Iran
چکیده [English]
Precise prediction of the texture component and simulation of the microstructure evolution facilitate the control and design of the final mechanical and physical properties. Through coupling the finite element simulation and crystal plasticity modelling, the current study introduced a robust technique for predicting the texture component after warm rolling. The simulation was then performed at two temperatures of 300 and 500oC for warm rolling. To calculate the appropriate hardening parameters for the crystal plasticity simulation, the experimental flow curves were obtained from torsion tests at the same temperatures of warm rolling. The presented framework predicted the texture components and associated intensities accurately. This was confirmed followed by comparing the results with the experimental ones. The proposed approach also predicted the flow curves correctly and precisely, as further proved by comparing the simulated flow curve based on the experimental flow curves. Revealing the effect of deformation gradient on the texture evolution, the simulation also showed that the shear components imposed by friction rotated the texture components along the ND direction of the specimen.
کلیدواژه‌ها [English]
- Texture
- Simulation
- Warm Rolling
- Finite Element Method
- Crystal Plasticity Modelling
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