A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Optimization of FSW parameters on mechanical properties of different aluminum alloys of AA6082 and AA7050 by response surface methodology
https://orcid.org/http://orcid.org/0000-0003-4191-0142
This work was focused on optimizing the friction stir welded (FSWed) joints of two different alloys, AA7050 and AA6082, using response surface methodology (RSM). The experiment included three factors and three levels, resulting in 20 experimental runs. The adequacy of the model was assessed using analysis of variance (ANOVA) at a 95% confidence level. The input parameters considered in the study were tool tilt angle (TTA), tool rotational speed (TRS), and welding speed (WS). The output responses analyzed were ultimate tensile strength (UTS), percent strain, and hardness. The study identified WS and TRS as the most significant parameters affecting the tensile properties of the FSWed joints. The highest UTS value of 220.32 was achieved at a TRS of 900 rpm, a WS of 40 mm/min, and a TTA of 2°. Conversely, the lowest UTS (152.28 MPa) and hardness values (75 HV) were observed at a WS of 70 mm/min, a TTA of 2°, and a TRS of 600 rpm. The optimized values of UTS, percent strain, and hardness at the SZ were 195.23 MPa, 18.04%, and 97.47 HV, respectively. The values of TRS, WS, and TTA were also optimized to 886.32 rev/min, 99.67 mm-min−1, and 1.083. The formation of sub-grains within the FSW joints was found to be crucial in improving the UTS. Sub-grains can serve as obstacles to dislocation motion, enhancing the material's strength and toughness. The refined grain structure observed in the stir zone of the FSW weldments of AA7050 and AA6082 at high rotational tool speeds is attributed to the combined effect of high temperature, dynamic recrystallization (DRX), and plastic deformation.
Optimization of FSW parameters on mechanical properties of different aluminum alloys of AA6082 and AA7050 by response surface methodology
https://orcid.org/http://orcid.org/0000-0003-4191-0142
This work was focused on optimizing the friction stir welded (FSWed) joints of two different alloys, AA7050 and AA6082, using response surface methodology (RSM). The experiment included three factors and three levels, resulting in 20 experimental runs. The adequacy of the model was assessed using analysis of variance (ANOVA) at a 95% confidence level. The input parameters considered in the study were tool tilt angle (TTA), tool rotational speed (TRS), and welding speed (WS). The output responses analyzed were ultimate tensile strength (UTS), percent strain, and hardness. The study identified WS and TRS as the most significant parameters affecting the tensile properties of the FSWed joints. The highest UTS value of 220.32 was achieved at a TRS of 900 rpm, a WS of 40 mm/min, and a TTA of 2°. Conversely, the lowest UTS (152.28 MPa) and hardness values (75 HV) were observed at a WS of 70 mm/min, a TTA of 2°, and a TRS of 600 rpm. The optimized values of UTS, percent strain, and hardness at the SZ were 195.23 MPa, 18.04%, and 97.47 HV, respectively. The values of TRS, WS, and TTA were also optimized to 886.32 rev/min, 99.67 mm-min−1, and 1.083. The formation of sub-grains within the FSW joints was found to be crucial in improving the UTS. Sub-grains can serve as obstacles to dislocation motion, enhancing the material's strength and toughness. The refined grain structure observed in the stir zone of the FSW weldments of AA7050 and AA6082 at high rotational tool speeds is attributed to the combined effect of high temperature, dynamic recrystallization (DRX), and plastic deformation.
Optimization of FSW parameters on mechanical properties of different aluminum alloys of AA6082 and AA7050 by response surface methodology
https://orcid.org/http://orcid.org/0000-0003-4191-0142
This work was focused on optimizing the friction stir welded (FSWed) joints of two different alloys, AA7050 and AA6082, using response surface methodology (RSM). The experiment included three factors and three levels, resulting in 20 experimental runs. The adequacy of the model was assessed using analysis of variance (ANOVA) at a 95% confidence level. The input parameters considered in the study were tool tilt angle (TTA), tool rotational speed (TRS), and welding speed (WS). The output responses analyzed were ultimate tensile strength (UTS), percent strain, and hardness. The study identified WS and TRS as the most significant parameters affecting the tensile properties of the FSWed joints. The highest UTS value of 220.32 was achieved at a TRS of 900 rpm, a WS of 40 mm/min, and a TTA of 2°. Conversely, the lowest UTS (152.28 MPa) and hardness values (75 HV) were observed at a WS of 70 mm/min, a TTA of 2°, and a TRS of 600 rpm. The optimized values of UTS, percent strain, and hardness at the SZ were 195.23 MPa, 18.04%, and 97.47 HV, respectively. The values of TRS, WS, and TTA were also optimized to 886.32 rev/min, 99.67 mm-min−1, and 1.083. The formation of sub-grains within the FSW joints was found to be crucial in improving the UTS. Sub-grains can serve as obstacles to dislocation motion, enhancing the material's strength and toughness. The refined grain structure observed in the stir zone of the FSW weldments of AA7050 and AA6082 at high rotational tool speeds is attributed to the combined effect of high temperature, dynamic recrystallization (DRX), and plastic deformation.
Optimization of FSW parameters on mechanical properties of different aluminum alloys of AA6082 and AA7050 by response surface methodology
Int J Interact Des Manuf
Kumar, Jitendra (author) / Kumar, Gaurav (author) / Mehdi, Husain (author) / Kumar, Mukesh (author)
2024-04-01
13 pages
Article (Journal)
Electronic Resource
English
Hot deformation of AA6082-T4 aluminum alloy
| British Library Online Contents | 2008
On the effect of interrupted ageing (T6I4) on the mechanical properties of AA6351 and AA7050 alloys
| DOAJ | 2021