چکیده مقاله
In the present study, lap joints of dissimilar 5052 aluminum alloy and pure copper were fabricated by friction stir spot welding process The work was aimed to find effect of parameters such as tool rotary speed 1000, 1400 and 2000 RPM and dwell time 5, 10 and 15s on mechanical properties such as lap shear strength and microstructure characterization Also, statistical models of the quality characteristics were developed based on response surface methodology for further understanding of the results Research findings showed that to obtain sound joints with high lap shear strength tool rotary speed of 2000 rpm and dwell time of 5 s should be selected It provides sufficient heat input and prevents the excessive material softening On the other hand, to achieve maximum hardness, 2000 rpm tool rotary speed should be chosen to provide enough heat for formation of intermetallic compound and 10 s dwell time should be used prevent enough time for grain roughening and coarse microstructure Also, from the statistical optimization by RSM approach, it was found that dwell time and tool speed are the significant factor for lap shear strength and hardness, respectively Moreover, results of multiobjective optimization revealed that to attain simultaneous maximum strength and hardness, tool speed of 2000 rpm and dwell time of 8 s should be used In such condition lap shear strength of 1755 N and hardness of 77 V are achieved with desirability of 85%
کلیدواژهها
نویسندگان
Reza Naghavi Zoghalchali
Mazandaran
شیوه ارجاع
Naghavi Zoghalchali, Reza,1404,Experimental and modeling studies on joining of aluminum 5052 to copper joints fabricated by friction stir spot welding,23th International Conference on Innovation and Research in Engineering Sciences (ICIRES)
ارائهشده در
مجموعه مقالات بیست و سومین کنفرانس بین المللی نوآوری و تحقیق در علوم مهندسی22 اسفند 1404