# HZG

 2018-12-0713:58 [PUBDB-2018-05301] Journal Article et al Deformation Mechanisms in Metastable Austenitic TRIP/TWIP Steels under Compressive Load Studied by in situ Synchrotron Radiation Diffraction Advanced engineering materials 2018(1801101), 1-9 (2018) [10.1002/adem.201801101]   The stress–strain behavior of austenitic steels showing the TRIP/TWIP effectcan be adjusted in a broad range by the addition of suitable alloyingelements. Although the underlying deformation mechanisms are reasonablyunderstood, the existing models often fail, in particular when the density ofmicrostructure defects is high and when individual microstructure defectsand features start to interact. [...] Restricted: PDF PDF (PDFA); 2018-12-0516:34 [PUBDB-2018-05230] Journal Article et al Multiscale process simulation of residual stress fields of laser beam welded precipitation hardened AA6082 Missing Journal / Fehlende Zeitschrift 3, 243 - 255 (2018) [10.1016/j.mtla.2018.08.010]   In this study, a multiscale modelling approach for the determination of residual stresses for the laser beam welded, precipitation hardened aluminium alloy AA6082-T6 is presented and applied. The material behaviour is described by an elasto-visco-plastic material model, specially suited for fusion welding processes. [...] 2018-12-0516:28 [PUBDB-2018-05229] Journal Article et al The effect of residual stresses and strain reversal on the fracture toughness of TiAl alloys The effect of local deformation on the fracture behaviour of TiAl alloys was investigated. Roller indentations impressed parallel to the crack plane significantly improve the fracture toughness. [...] 2018-11-2810:49 [PUBDB-2018-04911] Journal Article et al Evidence of an orthorhombic transition phase in a Ti-44Al-3Mo (at.%) alloy using in situ synchrotron diffraction and transmission electron microscopy Materials characterization 147, 398 - 405 (2019) [10.1016/j.matchar.2018.11.025]   Alloying of a binary system with an additional element often leads to the formation of new phases. In this work, a $γ$-TiAl based alloy with 3 at.% molybdenum was investigated, which was quenched from 1450 °C [...] OpenAccess: PDF PDF (PDFA); 2018-11-2614:09 [PUBDB-2018-04777] Journal Article et al Optimizing illumination for full field imaging at high brilliance hard X-ray synchrotron sources Optics express 26(23), 30435 - 30443 (2018) [10.1364/OE.26.030435]   A new technique is presented to overcome beam size limitation in full field imaging at high brilliance synchrotron sources using specially designed refractive X-ray optics. These optics defocus the incoming beam in vertical direction and reshape the intensity distribution from a Gaussian to a more desirable top-hat-shaped profile at the same time. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2018-11-0114:31 [PUBDB-2018-04095] Journal Article et al Structural reorganization of fullerene C$_{70}$ in N-methyl-2-pyrrolidone/toluene mixtures Journal of molecular liquids 272, 948 - 952 (2018) [10.1016/j.molliq.2018.10.110]   The changes in the cluster state of fullerene C$_{70}$ dissolved in N-methyl-2-pyrrolidone/toluene mixture after toluene addition have been studied. In order to measure the wide range of particle sizes, including sub-single-molecule region and respectively large clusters, the Small-Angle X-ray Scattering, Dynamic Light Scattering were used [...] 2018-10-1617:49 [PUBDB-2018-03814] Journal Article et al Propagation-based phase-contrast tomography of a guinea pig inner ear with cochlear implant using a model-based iterative reconstruction algorithm Biomedical optics express 9(11), 5330 - 5339 (2018) [10.1364/BOE.9.005330]   Propagation-based phase-contrast computed tomography has become a valuable tool for visualization of three-dimensional biological samples, due to its high contrast between materials with similar attenuation properties. However, one of the most-widely used phase-retrieval algorithms imposes a homogeneity assumption onto the sample, which leads to artifacts for numerous applications where this assumption is violated. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2018-10-1517:08 [PUBDB-2018-03801] Journal Article et al Specifics of $\mathrm{C_{60}}$ Fullerene Cluster Formation in a Solvent Mixture of Toluene and N-Methyl-2-Pyrollidone Journal of surface investigation 12(5), 872 - 876 (2018) [10.1134/S1027451018050063]   The two-level organization of $\mathrm{C_{60}}$ fullerene clusters in solutions of $\mathrm{C_{60}}$ in pure toluene and toluene/N-methyl-2-pyrrolidone solvent mixtures is studied by small-angle X-ray scattering (SAXS). The SAXS data for freshly prepared solutions are compared with the data obtained by dynamic light scattering, a technique we use to assess the temporal stability of the prepared solutions [...] Restricted: PDF PDF (PDFA); 2018-10-1213:15 [PUBDB-2018-03753] Journal Article et al High strength nanocrystalline Cu–Co alloys with high tensile ductility Journal of materials research 1, 1 - 11 (2018) [10.1557/jmr.2018.185]   A supersaturated single-phase Cu–26 at.% Co alloy was produced by high-pressure torsiondeformation, leading to a nanocrystalline microstructure with a grain size smaller than 100 nm.The nonequilibrium solid solution decomposed during subsequent isothermal annealing. In situhigh-energy X-ray diffraction was used to map changes linked to the separating phases, and thedevelopment of a nanoscale Cu–Co composite structure was observed. [...] Restricted: PDF PDF (PDFA); 2018-10-0911:33 [PUBDB-2018-03729] Journal Article et al Understanding precipitate evolution during friction stir welding of Al-Zn-Mg-Cu alloy through in-situ measurement coupled with simulation Acta metallurgica et materialia 148, 163 - 172 (2018) [10.1016/j.actamat.2018.01.020]   Friction Stir Welding (FSW) imparts both heat and deformation to the metal being joined, producing profound microstructural changes that determine the weld properties. In the case of welding of aerospace aluminium alloys, the most important change is the modification of the size, nature, and fraction of strengthening precipitates. [...]