Documents in process

Several processes studied by the ATLAS experiment at the Large Hadron Collider produce low-momentum b-flavored hadrons in the final state. This paper describes the calibration of a dedicated tagging algorithm that identifies b-flavored hadrons outside of hadronic jets by reconstructing the soft secondary vertices originating from their decays. [...]

This report reviews the published results of searches for possible additional scalar particles and exotic decays of the Higgs boson performed by the ATLAS Collaboration using up to 140 fb$^{-1}$ of 13 TeV proton-proton collision data collected during Run 2 of the Large Hadron Collider. Key results are examined, and observed excesses, while never statistically compelling, are noted. [...]

The comprehension of microhole formation during percussion drilling of metals using ultrashort laser pulses is still limited. The shape of a microhole can be impacted by factors like heat accumulation, the emergence of side channels, bending, and bulging. [...]

In this study, the influence of the Ti3AlC carbide morphology on the creep properties, the interaction betweencarbides and dislocations during creep deformation as well as the influence of external stress on carbidemorphology evolution were investigated in a Ti-45Al-5Nb-0.75C alloy. The results show that the best creepproperties are obtained after annealing at 800 ◦C for 336 h. [...]

This work presents a study of recent advances in the understanding of the mechanismcontrolling chemical composition and the microstructure of reaction regions in a Ta/304L steelcomposite with and without Cu interlayers fabricated by explosive welding, both duringcomposite formation and post-processing annealing. The microstructure of solidified meltregions (SMR) were characterized using scanning and transmission electron microscopy whilephase composition by X-ray synchrotron radiation. [...]

Laser beam welding as a reliable tool for high-precision joining of batteries or microelec-tronics is more and more the choice for achieving reproducible results in production processes. Inaddition to a high automation capability, the precise control of the energy deposition into the materialplays an important role, especially when highly reflective materials, such as copper or aluminum,must be welded together. [...]

Despite recent advancements, contemporary laboratory-based industrial computed tomography (CT) technology hasnot yet achieved the status of an efficient and economically viable in situ non-destructive method for examining rivetedjoints that are commonly used in the automotive industry. 2D X-ray or 3D CT systems can only reliably assess a rivet joint’scondition in rare, and favorable circumstances. [...]