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Weld metal impact toughness of electron beam welded 9% Ni steel
Journal of Materials Science, 20019% Ni steel was electron beam welded and the impact toughness of its weld metal was investigated. The improvement of weld metal toughness was studied by an increase of Ni content in the weld metal and its mechanism was discussed. The weld metal impact toughness was as low as 25–55 J at −196°C.
S.-H. Kim, C.-Y. Kang, K.-S. Bang
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Effect of Vibratory Weld Conditioning on Weld Impact Toughness
Materials and Manufacturing Processes, 2009With vibratory weld conditioning, the enhancement of weld metal microstructure can be achieved. The mechanical properties, level of residual stresses, and deformation can also be affected. This article provides the research results of the effect on weld metal impact toughness.
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AIP Conference Proceedings, 2004
Resistance spot welds in most current finite element crash models are characterized as a rigid link at the location of the weld which transfers the load but is not designed to fail. Newer weld elements in the popular finite element analysis codes include the option of incorporating a failure criteria for the weld element.
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Resistance spot welds in most current finite element crash models are characterized as a rigid link at the location of the weld which transfers the load but is not designed to fail. Newer weld elements in the popular finite element analysis codes include the option of incorporating a failure criteria for the weld element.
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Welding residual stress impact on fatigue life of a welded structure
Welding in the World, 2013A welded component has been fatigue tested and then analyzed using both the nominal stress approach and the fracture mechanics approach. The nominal stress approach predicted the wrong failure location as well as a very short fatigue life. A welding simulation was then performed to understand the residual stresses generated in the structure by welding.
Lingyun Pan +8 more
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Welding International, 2017
AbstractIt is shown that in explosive welding in conditions preventing the formation of a cumulative jet, the cleaning and activation of the welded surfaces take place ahead of the contact point by the plasma flows. Impact plasma forms in the welding gap during the hypersonic discharge of the high-temperature impact-compressed gas at its boundary with ...
L. B. Pervukhin, O. L. Pervukhina
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AbstractIt is shown that in explosive welding in conditions preventing the formation of a cumulative jet, the cleaning and activation of the welded surfaces take place ahead of the contact point by the plasma flows. Impact plasma forms in the welding gap during the hypersonic discharge of the high-temperature impact-compressed gas at its boundary with ...
L. B. Pervukhin, O. L. Pervukhina
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Impact welding and ripple formation
Journal of Applied Physics, 1975Rippled metallic surfaces have been produced as a result of ballistic impact as well as the movement of high-pressure (explosive) gas over a metal plate. Such loading conditions produce a strong shock wave. Under the high pressure, metal plate surfaces are plastically deformed and sometimes are welded together. These welds are sometimes associated with
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Impact of External Magnetic Field on Weld Quality of Resistance Spot Welding
Journal of Manufacturing Science and Engineering, 2011Electromagnetic stirring (EMS) has been demonstrated to have significant effect on molten metal in terms of crystal orientation, grain refinement and macro appearance of solidified structures by making use of Lorentz force. In the present study, resistance spot welding (RSW) process of 1.25 mm thick dual-phase steel DP780 with and without the external ...
Qi Shen +3 more
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Simulation of Thermal Impact Welded Lightweight Structures
PAMM, 2006AbstractIn the field of composites, welding of lightweight structures consisting of metal/fibre‐reinforced polymers is a very seminal issue, concerning for example the automotive industry. The theoretical and numerical modelling as well as the simulation of the mentioned composites is a crucial and integrating subarea. By using various material laws in
Johannes Utzinger +3 more
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Laser impact welding of aluminum to brass
Journal of Materials Processing Technology, 2019Abstract The microstructure and mechanical properties of aluminum and brass welding joints were investigated. The microscopy image revealed that the welding interface was flat in the case of using lower laser pulse energy. When the laser pulse energy was higher than 1200 mJ, the wavy interface and local melting blocks were created simultaneously ...
Xiao Wang +4 more
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Impact Toughness of Friction Stir Welded Al-Mg Alloy*
Materials Testing, 2014Abstract Al-Mg 5083 alloy was friction stir welded by varying welding variables, i. e., rotational speed, traversal speed and tool tilt angle. Welded specimens have been tested by the instrumented Charpy test to evaluate total absorbed energy, as well as the energy for crack initiation and the energy for crack growth.
Sedmak, Aleksandar +4 more
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