Topic
Heat-affected zone
About: Heat-affected zone is a research topic. Over the lifetime, 18787 publications have been published within this topic receiving 231744 citations.
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TL;DR: In this paper, the authors dealt with multiple-wire submerged-arc welding and cladding with metal-powder addition, and found that the use of metal powder will increase the deposition rate, and the welding-arc efficiency and reduce the shielding-flux consumption.
59 citations
TL;DR: In this paper, a phenomenological material model has been proposed to simulate the ultrasonic welding of metals by taking into account these effects (surface and volume) and the thermal softening due to friction and ultrasonic (acoustic) softening has been included in the proposed material model.
Abstract: Ultrasonic welding (consolidation) process is a rapid manufacturing process that is used to join thin layers of metal at low temperature and low energy consumption. Experimental results have shown that ultrasonic welding is a combination of both surface (friction) and volume (plasticity) softening effects. In the presented work, an attempt has been made to simulate the ultrasonic welding of metals by taking into account these effects (surface and volume). A phenomenological material model has been proposed, which incorporates these two effects (i.e., surface and volume). The thermal softening due to friction and ultrasonic (acoustic) softening has been included in the proposed material model. For surface effects, a friction law with variable coefficient of friction that is dependent on contact pressure, slip, temperature, and number of cycles has been derived from experimental friction tests. The results of the thermomechanical analyses of ultrasonic welding of aluminum alloy have been presented. The goal of this work is to study the effects of ultrasonic welding process parameters, such as applied load, amplitude of ultrasonic oscillation, and velocity of welding sonotrode on the friction work at the weld interface. The change in the friction work at the weld interface has been explained on the basis of softening (thermal and acoustic) of the specimen during the ultrasonic welding process. In the end, a comparison between experimental and simulated results has been presented, showing a good agreement.
59 citations
TL;DR: In this article, the effect of welding on the mechanical properties of high and ultra-high strength tubes in hybrid sections is investigated and quantification of these effects on the material of welded steel, a specific type of hybrid section composed of plates and tubes is considered in which two scales of experimental analysis are conducted at different positions from weld.
59 citations
TL;DR: In this article, the authors investigated the LME sensitivity of Zn-coated 22MnB5 press-hardening steel as a function of stress intensity and heat input during laser beam welding.
59 citations
TL;DR: In this paper, the laser-beam machining of metallic coated sheet steels such as ZINCALUME, ZINCANNEAL and GALVABOND of 1 mm thickness was discussed.
59 citations