کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7976560 | 1514694 | 2016 | 49 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of cyclic solution treatment on microstructure and mechanical properties of friction stir welded 7075 Al alloy
ترجمه فارسی عنوان
اثر تصفیه محلول چرخه بر روی ریزساختار و خواص مکانیکی اصطکاک سیم جوش 7075 آلیاژ آلومینیوم
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کلمات کلیدی
آلیاژ آلومینیوم 7075، اصطکاک جوشکاری درمان سیکل محلول سالخورده، ریز ساختار، ویژگی های مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
7075-T6 aluminum alloy plates were prepared by friction stir welding (FSW) followed by age hardening. A novel solutionizing method, namely cyclic solution treatment (CST), comprising of a repeated heating between 400 and 480 °C for 0.25 h was employed. The microstructure of the joints was studied by optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The effect of CST on mechanical properties was assessed by means of tensile test and microhardness measurement. A significant grain size refinement is taken place by FSW whilst the grain size is not considerably changed after CST. The results show that precipitate particles of the welding area before and after heat treatment are MgZn2 and MgAlCu/Al7Cu2Fe, respectively. CST improves tensile strength and elongation while homogenizes the hardness distribution of the FSWed joint. A noteworthy enhancement in the hardness (~45%) and tensile strength (~33%) of the FSWed sample is achieved after CST and aging at 130 °C for 24 h. The tensile fracture surface of the Al alloy joint demonstrates fine dimples after CST while less-developed dimples are detected after aging.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 649, 1 January 2016, Pages 293-300
Journal: Materials Science and Engineering: A - Volume 649, 1 January 2016, Pages 293-300
نویسندگان
S.M. Bayazid, H. Farhangi, H. Asgharzadeh, L. Radan, A. Ghahramani, A. Mirhaji,