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Residual stress and strain in MIG butt welds in 5083-H321 aluminium: As-welded and fatigue cycled
Authors:MN James  DJ Hughes  DG Hattingh  G Mills  PJ Webster
Affiliation:1. School of Engineering, University of Plymouth, Drake Circus, Devon PL4 8AA, England, United Kingdom;2. FaME38 at ILL-ESRF, 6 rue Jules Horowitz, BP156, 38042 Grenoble Cedex 9, France;3. Department of Mechanical Engineering, Nelson Mandela Metropolitan University, Private Bag X6011, Port Elizabeth 6000, South Africa;4. Institute for Materials Research, University of Salford, Newton Building, Salford, M5 4WT, England, United Kingdom;1. Department of Engineering University of Ferrara, Italy;2. Department of Aeronautics Imperial College, London;3. Department of Engineering University of Ferrara, Italy;4. Department of Engineering University of Ferrara, Italy;1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;2. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China;1. TR Naval Forces, Kocaeli, Turkey;2. Kocaeli University, Faculty of Engineering, Department of Mechanical Engineering, Kocaeli, Turkey;3. Kocaeli University, Welding Techn. Research, Education and Training Center, Kocaeli, Turkey;4. Gazi University, Faculty of Architecture, Department of Industrial Design, Ankara, Turkey;1. TR Naval Forces, Kocaeli, Turkey;2. Kocaeli University, Faculty of Engineering, Department of Mechanical Engineering, Kocaeli, Turkey;3. Kocaeli University, Welding Technology Research, Education and Training Center, Kocaeli, Turkey;4. Gazi University, Faculty of Architecture, Department of Industrial Design, Ankara, Turkey;1. Shanghai Key Laboratory of Material Laser Processing and Modification(Shanghai Jiao Tong University), Shanghai 200240, PR China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai, 200240, PR China;3. Central South University, Changsha 410083, PR China;4. Hudong-Zhonghua Shipbuilding (Group) Co. Ltd, Pudong Street 2851, Shanghai 200240, China;1. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore;2. Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester, UK;1. Department of Civil Engineering, Ton Duc Thang University, 19, Nguyen Huu Tho, Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam;2. The Graduate School of Construction Engineering, Chung-Ang University, 84, Huksuk-ro, Dongjak-ku, Seoul 156-756, Republic of Korea;3. Department of Civil and Environmental & Plant Engineering, Chung-Ang University, 84, Huksuk-ro, Dongjak-ku, Seoul 156-756, Republic of Korea
Abstract:This paper presents single-line residual stress profiles for 8 mm 5083-H321 aluminium plates joined by gas metal arc (MIG) welding. The data were obtained by synchrotron diffraction strain scanning. Weld metal stresses (up to ~7 mm either side of the centreline) are quite scattered and unreliable because of the large epitaxial grain size in the fusion zone. Peak magnitude of the transverse stresses varies between +50 MPa (19% of parent plate proof strength) at the HAZ boundary to ?150 MPa (57% of PP proof strength) at the weld centreline. Equivalent values for longitudinal stresses are +90 MPa (34% of PP proof strength) some 22 mm from the weld centreline to ?120 MPa (45% of PP proof strength) at the weld centreline. Plate-to-plate variation in the as-welded transverse and longitudinal residual stress values across the weld toe region is around 40 MPa. The effect on residual stress and strain values of a sequence of applied fatigue loads was also considered and reported.
Keywords:
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