Multimodal experimental and numerical evaluation of Residual Stress in AA6082-T6 Friction Stir Welding pipe girths

被引:2
作者
Tognan, Alessandro [1 ]
Sheshi, Noel [1 ]
Vaglio, Emanuele [1 ]
Luzin, Vladimir [2 ,3 ]
Hattingh, Daniel [4 ]
Salvati, Enrico [1 ]
机构
[1] Univ Udine, Polytech Dept Engn & Architecture, Via Sci 206, I-33100 Udine, Italy
[2] Australian Nucl Sci & Technol Org ANSTO, Australian Ctr Neutron Scattering ACNS, New Illawarra Rd, Sydney, NSW 2234, Australia
[3] Univ Newcastle, Sch Engn, Callaghan, NSW 2308, Australia
[4] Nelson Mandela Univ, Dept Mech Engn, ZA-6000 Port Elizabeth, South Africa
关键词
Circular Friction Stir Welding; FSW Tubes; Residual Stress; Contour Method; Neutron Diffraction; Finite Element Modelling; MECHANICAL-PROPERTIES; CONTOUR METHOD; ALLOY; MICROSTRUCTURE; AA6061-T6; JOINTS; MODEL; SPEED; STEEL;
D O I
10.1016/j.jmatprotec.2024.118665
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Although Residual Stress (RS) induced by Friction Stir Welding (FSW) has been widely investigated for planar weldments, the same attention has not been paid as far as the curved variant is concerned. To comprehensively address this gap, the present paper studies the RS in three AA6082-T6 FSW pipes (37.5 mm outer diameter x 3 mm thickness) manufactured with varying feed speeds, i.e. 50, 75, 100 mm/min. RS evaluations were cross-validated by two independent experimental methods, i.e. Neutron Diffraction and Contour Method. A novel multi-physics Finite Element (FE) model was implemented and calibrated using the previously obtained experimental outcomes to shed light on the key physical mechanism responsible for the arising of RS. The analysis unveiled M-like hoop RS patterns akin to flat FSW butt-welds but having lower magnitudes ranging from -20 MPa to 65 MPa, most likely due to the different thermal histories. The axial RS oscillates between-20 MPa and 20 MPa, whereas the radial component turned out to negligible. The FE model also demonstrated how feed speed, plunge force, and external clamping conditions alter RS magnitude while identifying 75 mm/min as the optimal speed that minimises the peak hoop RS to 40 MPa.
引用
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页数:19
相关论文
共 56 条
[1]   A Review on Friction Stir Welding/Processing: Numerical Modeling [J].
Akbari, Mostafa ;
Asadi, Parviz ;
Sadowski, Tomasz ;
Gu, Cheng ;
Mi, Gaoyang ;
Ou, Wenmin .
MATERIALS, 2023, 16 (17)
[2]   Material flow in friction stir welding: A review [J].
Ambrosio, D. ;
Morisada, Y. ;
Ushioda, K. ;
Fujii, H. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2023, 320
[3]   Quantification of uncertainty in a defect-based Physics-Informed Neural Network for fatigue evaluation and insights on influencing factors [J].
Avoledo, Emanuele ;
Tognan, Alessandro ;
Salvati, Enrico .
ENGINEERING FRACTURE MECHANICS, 2023, 292
[4]   Critical comparison of two independent measurements of residual stress in an electron-beam welded uranium cylinder: Neutron diffraction and the contour method [J].
Brown, D. W. ;
Holden, T. M. ;
Clausen, B. ;
Prime, M. B. ;
Sisneros, T. A. ;
Swenson, H. ;
Vaja, J. .
ACTA MATERIALIA, 2011, 59 (03) :864-873
[5]   A State-of-the-Art Review on Solid-State Metal Joining [J].
Cai, Wayne ;
Daehn, Glenn ;
Vivek, Anupam ;
Li, Jingjing ;
Khan, Haris ;
Mishra, Rajiv S. ;
Komarasamy, Mageshwari .
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 2019, 141 (03)
[6]  
Carlone P., 2013, OPEN MECH ENG J, V7, P18, DOI DOI 10.2174/1874155X01307010018
[7]   Finite element modeling of friction stir welding - thermal and thermomechanical analysis [J].
Chen, CM ;
Kovacevic, R .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2003, 43 (13) :1319-1326
[8]   Effect of surface states of steel on microstructure and mechanical properties of lap joints of magnesium alloy and steel by friction stir welding [J].
Chen, Y. C. ;
Nakata, K. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2010, 15 (04) :293-298
[9]  
Cignoni Paolo., 2008, EUROGRAPHICS ITALIAN, V2008, P129, DOI [DOI 10.2312/LOCALCHAPTEREVENTS/ITALCHAP/ITALIANCHAPCONF2008/129-136, 10.2312/LocalChapterEvents/ItalChap/ItalianChapConf2008/129-136, 10.2312/LocalChapterEvents/ItalChap/ItalianChapConf2008]
[10]  
de France E., 1989, Open Source on