مروری مختصر بر خواص مکانیکی ورق‌های فلزی پس از فرایند نورد زاویه‌ای با کانال‌های برابر

نوع مقاله : مقاله پژوهشی

نویسنده

آسیه حبیبی

گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه لرستان، لرستان، خرم‌آباد.

10.22067/jmme.2025.91620.1179

چکیده

نورد زاویه‌ای با کانال‌های برابر براساس فرایند پرس‌زاویه‌ای با کانال‌های برابر، یک روش‌ تغییرشکل پلاستیک شدید است. این فرایند به منظور غلبه بر محدودیت ناپیوستگی و نیز عدم به‌کارگیری ورق‌های نازک در فرایند پرس‌زاویه‌ای با کانال‌های برابر گسترش یافته است. این فرایند توانایی اعمال تغییرشکل برشی شدید و ایجاد ساختار فوق ریزدانه و نیز بهبود خواص مواد در ورق‌های نازک را بدون تغییر در ابعاد دارد. پارامترهای فرایند مانند تعداد پاس، مسیر فرایند و دمای پیشگرم، برای تحلیل رفتار مکانیکی در مواد مورد بررسی قرار گرفته است. در این مقاله با تمرکز بر اثر تعداد پاس‌ها و مسیر فرایند، اثر فرایند نورد زاویه‌ای با کانال‌های برابر بر خواص مکانیکی مانند استحکام تسلیم و کششی، ازدیاد طول و میکروسختی در آلیاژهای مختلف به اختصار ارائه می‌شود. علیرغم بهبود خواص مکانیکی در ورق‌ها با تکرار تعداد پاس در فرایند نورد زاویه‌ای با کانال‌های برابر، تکرار بیش از سه پاس فرایند برای بهبود خواص، منطقی به نظر نمی‌رسد.

کلیدواژه‌ها

نورد زاویه‌ای با کانال‌های برابر

تغییرشکل پلاستیک شدید

خواص مکانیکی

استحکام تسلیم

استحکام کششی

انعطاف‌پذیری

میکروسختی

موضوعات

• شکل دادن فلزات

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عنوان مقاله English

A Brief Review of Mechanical Properties of Metal Sheets processed by Equal Channel Angular Rolling Process

نویسنده English

Asiyeh Habibi

Department of mechanical engineering, Lorestan University, Lorestan, Khorramabad, Iran.

چکیده English

Equal channel angular rolling based on the equal channel angular pressing is a severe plastic deformation process. This process has been developed to overcome the limitations of discontinuity and the lack of using strips in the equal channel angular pressing process. This process has the ability to apply severe shear deformation and fabricate ultra-fine grained structure, as well as improve the material properties of thin sheets without changing the dimensions. Process parameters such as rolling pass number and route have been investigated to analyze the mechanical behavior of materials. In the present study, the impact of equal channel angular rolling process on the mechanical properties such as yield and tensile strength, elongation and microhardness in different alloys of materials is briefly summarized by focusing on the effect of pass number and rolling route. Despite the improvement of mechanical properties in sheets by repeating the number of equal channel angular rolling process passes, repeating more than three process passes to improve the properties does not seem logical.

کلیدواژه‌ها English

Equal channel angular rolling

Severe plastic deformation

Yield strength

Tensile strength

Ductility

Microhardness

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