بررسی تأثیر افزودن نانوصفحات WS2 بر ریزساختار و خواص مکانیکی آلیاژ آلومینیوم 5083 جوش داده شده به روش جوشکاری اصطکاکی اغتشاشی(FSW)

نوع مقاله : علمی و پژوهشی

نویسنده

گروه مهندسی مواد- دانشکده مکانیک-دانشگاه تبریز- تبریز-ایران

چکیده

این مطالعه با هدف بررسی تعداد پاس و افزودن نانو صفحات WS2 به اتصالات جوش لب به لب اصطکاکی اغتشاشی (FSW) آلیاژ آلومینیوم 5083 بر ریزساختار و خواص استحکامی و سختی انجام شده است. در ابتدا از ترکیب دو عامل سرعت دورانی و سرعت پیشروی استفاده شده و نمونه بهینه در مورد عدم وجود عیوب سطحی و متالورژیکی و حداکثر مقدار مقاومت کششی نهایی انتخاب شده است. سپس FSW با افزودن و یا بدون افزودن نانو صفحات WS2 برای تعداد پاس مختلف انجام شد. مشاهدات ریزساختاری نشان داد که اندازه دانه در ناحیه همزده با افزایش تعداد پاس‌های جوش کاهش یافته و توزیع یکنواخت ذرات حاصل شده است. همچنین استفاده از جوش چهار پاس پیوسته با سرعت دورانی چرخشی 700 دور بر دقیقه و سرعت پیشروی 14 میلی‌متر بر دقیقه، باعث افزایش MPa 52 در استحکام کششی و Hv 35 در مقدار سختی نسبت به نمونه بدون افزودن نانو صفحات می‌شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the effect of adding WS2 nanosheets on the microstructure and mechanical properties of 5083 aluminum alloy welded by friction stir welding (FSW) method

نویسنده [English]

  • Mohammad Alipour
Faculty of Mechanical engineering, Department of Materials Engineering, University of Tabriz, Iran
چکیده [English]

This study aims to investigate the number of passes and the addition of WS2 nanoplates to friction stir welding (FSW) joints of aluminum alloy 5083 on the microstructure, strength and hardness properties. At first, the combination of the two factors of rotational speed and forward speed was used and the optimal state was selected in the absence of surface and metallurgical defects and the maximum value of the final tensile strength. Then FSW was performed with or without the addition of WS2 nanoplates for different pass numbers. Microstructural observations showed that the grain size in the stirred area decreased with the increase in the number of welding passes and a uniform distribution of particles was obtained. Also, the use of continuous four-pass welding with a rotational rotational speed of 700 rpm and forward speed of 14 mm/min increases the tensile strength by 52 MPa and 35 Hv in the hardness value compared to the sample without the addition of nanoplates.

کلیدواژه‌ها [English]

  • Friction stir welding
  • Weld pass numbers
  • Mechanical properties
  • Microstructure

مراجع

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