Microstructure, mechanical properties and stress corrosion behavior of friction stir welded joint of Al–Mg–Si alloy extrusion

Author(s):  
Sen Lin ◽  
Yun-Lai Deng ◽  
Hua-Qiang Lin ◽  
Ling-Ying Ye ◽  
Zhen Zhang ◽  
...  
Metals ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 421 ◽  
Author(s):  
Sajad Fouladi ◽  
Amir Ghasemi ◽  
Mahmoud Abbasi ◽  
Morteza Abedini ◽  
Amir Khorasani ◽  
...  

2021 ◽  
Vol 15 ◽  
pp. 1130-1144
Author(s):  
Yuzhe Pan ◽  
Yu Wang ◽  
Fuqiang Guo ◽  
Tiehao Zhang ◽  
Kenji Matsuda ◽  
...  

2020 ◽  
Vol 56 ◽  
pp. 623-634 ◽  
Author(s):  
Wen Wang ◽  
Shengyi Zhang ◽  
Ke Qiao ◽  
Kuaishe Wang ◽  
Pai Peng ◽  
...  

Author(s):  
Lingying Ye ◽  
Wenqing Yang ◽  
Chuqi Jiang ◽  
Huaqiang Lin ◽  
Shengdan Liu ◽  
...  

2014 ◽  
Vol 496-500 ◽  
pp. 110-113
Author(s):  
Dong Gao Chen ◽  
Jin He Liu ◽  
Zhi Hua Ma ◽  
Wu Lin Yang

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.


Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Guanglong Cao ◽  
Mingfa Ren ◽  
Yahui Zhang ◽  
Weibin Peng ◽  
Tong Li

The partition of aluminum alloy welded joint often depends on microscopic methods such as scanning electron microscopy before. This paper provides a novel partitioning method, which can obtain the material properties and partition results at the same time based on tensile test. The mechanical properties of every point on the whole welded joint are first obtained by the digital image correlation (DIC) method. Then, the mechanical property function of the weld joint along the weld center is established due to the changes of plastic property and strain hardening exponent at each point and the boundary between different areas is then determined. Metallographic detection technology and nano-mechanical testing techniques are employed to validate this partitioning scheme. The partition result of the strategy proposed in this paper is consistent with the partitioning result of the classical method. Compared to classical method, the proposed partitioning method is more practical and effective, as it can obtain mechanical properties and partition boundary through a single tensile test and reduce the cost of metallographic test.


Author(s):  
Masahito Mochizuki ◽  
Masao Toyoda ◽  
Masayuki Inuzuka ◽  
Hidehito Nishida

Mechanical properties and fracture toughness in friction stir welded joint of vessels of structural aluminum alloy type A5083-O are investigated. Welded joint from 25 mm-thick plate is fabricated by one-side one-pass friction stir. Charpy impact energy and critical crack-tip opening displacement (CTOD) in friction stir weld are much higher than those of base metal or heat-affected zone, whereas mechanical properties such as stress-strain curve and Vickers hardness do not have a conspicuous difference. Effects of microstructure on crack initiation and propagation are studied in order to clarify the difference of fracture toughness between stir zone and base metal. Both tensile test and bending test show that the fine-grained microstructure in stir zone induces to increase ductile crack initiation and propagation resistance by analyzing fracture resistance curves and diameter of dimples in fracture surface. It is found that high fracture toughness value in stir zone is affected fine-grained microstructure by friction stirring.


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