چکیده مقاله
In this study, the microscopic structure and mechanical properties of the joint surface of two 2024 T3 and 7075 T6 machine alloys were investigated Combined center design RSM design was used to optimize the test and the effect of effective factors on the weld joint Welding is performed using FSW process with a tool made of hot rolled steel in three pins with tool geometry with cylindrical, conical and square cross sections with a rotational speed of 800 1200 rpm and a forward speed of 10 50 mm per minute A scanning light and electron microscope was used to examine the junction area The results show a microstructure with the size of elongated and grown grains in the HAZ region and the size of very fine and banded grains in the junction of two sheets that have intermetallic compounds and different sediments at the cross sectional area After analyzing the overall performance by tensile test and designing the experiment withmini tab software, it can be found that among the variable factors, respectively, at the cross section geometry of the tool pin, rotational speed and at the last tool advance speed are the most influential factors on tensile strength and area The surface of the weld is elastic The highest tensile strength was obtained in the area of connection to the tool pin with a cylindrical cross section with a rotational speed of 1132 rpm and a forward speed of 32 mm / min The failure zone in the tensile test occurred in the HAZ zone in the 2024 company alloy
کلیدواژهها
نویسندگان
Sajjad Mohammadi
M Sc in Materials Engineering , Arak University
Reza Beigi
Assistant Professor of Arak University
Majid Zarezadeh Mehrizi
Assistant Professor of Arak University ,
شیوه ارجاع
Mohammadi, Sajjad and Beigi, Reza and Zarezadeh Mehrizi, Majid,1400,The effect of rotation speed and advancement with three forms of tool pin geometry on the tensile strength of the joint area of 2024-T3 to 7075-T6 aluminum alloys butt by FSW process,4th International Conference on Welding and Non Destructive Testing & 22nd National Conference on Welding & Inspection & 11th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات چهارمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب و بیست و دومین کنفرانس ملی جوش و بازرسی و یازدهمین کنفرانس ملی آزمایش های غیرمخرب18 اسفند 1400 · اصفهان