scholarly journals Study on precipitated phases, dislocations and hardness in the HAZ of friction stir welded joint of 2024 aluminum alloy

2017 ◽  
Vol 55 (05) ◽  
pp. 357-361 ◽  
Author(s):  
PENG LIU ◽  
KEYUN FENG ◽  
SHUBO XU ◽  
GEMING ZHANG ◽  
MEIQING CAO ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Welded Joint ◽  
2024 Aluminum Alloy ◽  
Friction Stir ◽  
Precipitated Phases

Study on the Microstructure and Mechanical Properties of Welding Joints of 7A05 Aluminum Alloy by FSW

2014 ◽  
Vol 496-500 ◽  
pp. 110-113
Author(s):  
Dong Gao Chen ◽  
Jin He Liu ◽  
Zhi Hua Ma ◽  
Wu Lin Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Welding Speed ◽  
Welded Joint ◽  
Optical Microscope ◽  
Nugget Zone ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Welding Joints

The7A05 aluminum alloy of the 10mm thickness was welded by the friction stir welding. The microstructure and mechanical Properties of the welded joint was researched by the optical microscope, etc. The results showed: the microstructure of the weld nugget zone and the thermal mechanically affected zone were refined as the welding speed increasing when the rotate speed is constant. As the welding speed increasing the strength of extension of the welded joint is increasing at first and then stable basically. but the yield strength had no obvious change.

Microstructure and nanomechanical behavior of friction stir welded joint of 7055 aluminum alloy

2021 ◽  
Vol 61 ◽  
pp. 311-321
Author(s):  
Wen Wang ◽  
Shengnan Yuan ◽  
Ke Qiao ◽  
Kuaishe Wang ◽  
Shengyi Zhang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Welded Joint ◽  
Friction Stir ◽  
7055 Aluminum Alloy

Study on the Precipitation Behavior of Precipitates of 7075 Aluminum Alloy Friction Stir Welding Joint

2020 ◽  
Vol 1003 ◽  
pp. 37-46
Author(s):  
Hao Zhu ◽  
Shao Kang Dong ◽  
Ze Ming Ma ◽  
Jun Wang
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Strain Hardening ◽  
Strengthening Effect ◽  
7075 Aluminum Alloy ◽  
Friction Stir ◽  
Microhardness Distribution ◽  
Fine Grain ◽  
Fine Grain Strengthening ◽  
Precipitated Phases

In this work, the microhardness of 7075 aluminum alloy friction stir welding (FSW) joint was measured by a micro vickers hardness tester, the microstructure of the joints was characterised by microscope, the precipitated phases among the welding nugget zone (WNZ), thermal mechanical affected zone (TMAZ), heat affected zone (HAZ) were affirmed by X-ray diffractometer (XRD) and the lattice fringe of transmission electron microscopy (TEM) high resolution image. Based on this, the precipition behavior of precipitated phases was studied. The results show that the microhardness distribution of the 7075 aluminium alloy FSW joints is heterogeneous in comparison with the base metal (BM). The precipitates in the joint mainly include MgZn rod shape and AlCuMg in elliptical shape. In the WNZ, the main precipitate is AlCuMg, and the fine grain strengthening effect is better, so the microhardness in this zone is relatively high. In the TMAZ, the quantity of AlCuMg decreased while the MgZn2 increased relatively in comparison with the WNZ. At the same time, the effect of the fine grain strengthening was weakened, though the strain hardening increased. Therefore, the microhardness in the TMAZ still decreased. In the HAZ, the quantity of MgZn2 increased furtherly, and there is no strain hardening and fine grain strengthening, so the microhardness of the HAZ was the lowest among the FSW joints. Besides, through comparative tests, the optimal process parameters of friction stir welding of 7075 aluminum alloy were obtained.

G0400203 Damping property of 2024 aluminum alloy Motion welded joint

2015 ◽  
Vol 2015 (0) ◽  
pp. _G0400203--_G0400203-
Author(s):  
Fumiya MURAKOSHI ◽  
Kazuyoshi KATOH ◽  
Masakatsu MAEDA ◽  
Mitsuteru NOMOTO
Keyword(s):  
Aluminum Alloy ◽  
Welded Joint ◽  
2024 Aluminum Alloy ◽  
Damping Property
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