نویسندگان
1 دانشگاه شهید مدنی آذربایجان، دانشکده فنی و مهندسی، گروه مهندسی متالورژی و مواد ، تبریز، ایران.
2 دانشگاه صنعتی سهند تبریز، دانشکده مهندسی متالورژی و مواد ، تبریز، ایران.
چکیده
پیچیدگی تغییر‌شکل پلاستیک حین جوشکاری همزن اصطکاکی سبب می‌شود که جهت‌گیری بافت در نقاط مختلف جوش تغییر کند. بنابراین، باید بافت اولیه حاصل از آزمون پراش الکترونهای برگشتی در چارچوب تغییر‌شکل برشی مرجع قرار نگرفته و انتقال بافت اولیه به چارچوب بافت برشی مرجع ضروری می‌باشد. در این پژوهش، به بررسی بافت جوش همزن اصطکاکی برنج تک‌فازی پرداخته شد. نتایج نشان داد که A_1^* (111)[1 ̅1 ̅2]،A_2^* (111)[112 ̅ ]، C {001}⟨110⟩ و گاوس {011}⟨100⟩ اجزاء اصلی تشکیل‌دهنده بافت در ناحیه جوش هستند. اجزاء بافت برشی (A_1^*، A_2^* و C) نشان‌دهنده تبلور مجدد دینامیکی پیوسته به عنوان سازوکار غالب و حضور بافت گاوس تاییدکننده تبلور مجدد دینامیکی ناپیوسته به عنوان سازوکار محتمل دیگر در پیدایش ریزساختار نهایی تعیین شد.
کلیدواژه‌ها
عنوان مقاله [English]
Texture Analyses of Friction Stir Welded Single-phase Brass Using Electron Back Scattered Diffraction
نویسندگان [English]
- Akbar Heidarzadeh 1
- Tohid Saeid 2
1 Azarbaijan Shahid Madani University, Department of Materials Engineering, Tabriz, Iran.
2 Sahand University of Technology, Department of Materials Engineering, Tabriz, Iran.
چکیده [English]
Complex plastic deformation during friction stir welding causes variation of texture in different locations of the joint. Therefore, the as-acquired texture data from electron backscattered diffraction analysis are not often in the shear deformation frame of reference. In this study, the texture components of the friction stir welded single phase brass was studied. The results showed that the texture of the joint contained A_1^* (111)[1 ̅1 ̅2], A_2^* (111)[112 ̅ ], C{001}⟨110⟩, and Goss{011}⟨100⟩ components. The existence of A_1^*, A_2^*, and C texture components revealed that the continuous dynamic recrystallization plays a dominant role in the microstructural evolution. In addition, the presence of Goss texture component showed that discontinues dynamic recrystallization may also participate in the new grain formation.
کلیدواژه‌ها [English]
- Friction Stir Welding
- Texture
- Electron backscattered diffraction
- Brass
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