Journal Article

Haynes® 282, a nickel-based superalloy, is renowned for its exceptional strength, thermal stability, and resistanceto oxidation and creep. While directed energy deposition arc-based additive manufacturing of this alloy hasbeen explored, the formation of large columnar grains and high texture leading to anisotropy and suboptimalmechanical performance remains a significant challenge. [...]

Additive manufacturing (AM) of parts is typically associated with the generation of high residual stresses because of repeatedexposure to high thermal gradients. Non-destructivemeans of mapping the residual stresses are required for optimising theseprocesses and/or mitigating such stresses by thermal treatments. [...]

The orthorhombic O phase precipitation within the D019-α2 phase has attracted increasing attention recently inhigh Nb containing TiAl (high Nb-TiAl) alloys since the precipitation temperature is close to the expected servicetemperature of the alloys. In this study, in-situ synchrotron high energy X-ray diffraction (HEXRD) reveals thatthe O phase precipitates at 550 ◦C while it dissolves into the α2 phase at 750 ◦C during heat treatments. [...]

Solid-state additive manufacturing (AM) processes such as multi-layer friction surfacing (MLFS) can overcome typicaldisadvantages of fusion-based AM such as high residual stresses, porosity or hot cracking. The tool-less process setup ofMLFS prevents contamination of the resulting components, e.g., caused by wear or the use of lubricants. [...]

Talc, as an important class of clay minerals constituting subducting oceanic crust, has long been known to undergo interlayer expansion by ~6% to contain net ~13 wt.% water into the ‘so-called’ 10 Å phase. Although subduction fluid is mildly alkaline and includes various salts and other dissolved species, its effect on the stability of subducting minerals has not yet been considered. [...]

Quantum computing provides a novel avenue towards simulating dynamical phenomena, and, in particular, scattering processes relevant for exploring the structure of matter. However, preparing and evolving particle wave packets on a quantum device is a nontrivial task. [...]

The use of metal single atoms (SAs) as co-catalysts on semiconductors has emerged as a promising technology to enhance their photocatalytic hydrogen production performance. In this study, we describe the deposition of very low amounts of Pt SAs (<0.1 at %) on exfoliated graphitic carbon nitride (C3N4) by a direct Pt−deposition approach from highly dilute chloroplatinic acid precursors. [...]

The surface chemistry of the Fischer-Tropsch catalytic reaction over Co hasstill several unknows. Here, we report an in-situ X-ray photoelectron spectro-scopy study of Co 0001ð Þ and Co(1014), and in-situ high energy surface X-raydiffraction of Co 0001ð Þ, during the Fischer-Tropsch reaction at 0.15 bar - 1 barand 406 K - 548 K in a H2/CO gas mixture. [...]

Measurements are presented of inclusive and differential cross sections for Z boson associated production of top quark pairs ($\mathrm{t\bar{t}}$Z) and single top quarks (tZq or tWZ). The data were recorded in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. [...]