FS-PEX

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2017-12-08
09:33
[PUBDB-2017-12965] Journal Article
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Kinetic alteration of the $6Mg(NH_{2} )_{2}–9LiH–LiBH_{4}$ system by co-adding $YCl_{3}$ and $Li_{3}N$
ddc:540
The 6Mg(NH$_2$)$_2$–9LiH–LiBH$_4$ composite system has a maximum reversible hydrogen content of 4.2 wt% and a predicted dehydrogenation temperature of about 64 °C at 1 bar of H$_2$. However, the existence of severe kinetic barriers precludes the occurrence of de/re-hydrogenation processes at such a low temperature (H [...]

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2017-12-07
14:13
OpenAccess [PUBDB-2017-12882] Journal Article
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Charge-Stripe Order and Superconductivity in Ir$_{1−x}$Pt$_x$Te$_2$
ddc:000
A combined resistivity and hard x-ray diffraction study of superconductivity and charge ordering in Ir Ir$_{1−x}$Pt$_x$Te$_2$, as a function of Pt substitution and externally applied hydrostatic pressure, is presented. Experiments are focused on samples near the critical composition $x_c$  ~  0.045 where competition and switching between charge order and superconductivity is established [...]
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2017-11-20
10:54
Embargoed OpenAccess [PUBDB-2017-12117] Journal Article
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Correlation of precipitate evolution with Vickers hardness in Haynes® 282® superalloy: In-situ high-energy SAXS/WAXS investigation
ddc:600
The aim of this work is to characterize the precipitation kinetics in Haynes® 282® superalloys using in-situ high-energy Small Angle X-ray Scattering (SAXS) together with Wide Angle X-ray Scattering (WAXS). The phases identified by WAXS include $\gamma$ (matrix), $\gamma$′ (hardening precipitates), MC (metallic carbides), and M$_{23}$C$_6$/M$_6$C (secondary metallic carbides). [...]
Published on 2017-11-11. Available in OpenAccess from 2018-11-11.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

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2017-11-13
16:38
OpenAccess [PUBDB-2017-11905] Journal Article
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Staging superstructures in high-$T_{c}$ Sr/O codoped $La_{2−x}Sr_{x}CuO_{4+y}$
ddc:530
We present high-energy x-ray diffraction studies on the structural phases of an optimal high-T$_c$ superconductor $La_{2−x}Sr_{x}CuO_{4+y}$ tailored by co-hole-doping. This is specifically done by varying the content of two very different chemical species, Sr and O, respectively, in order to study the influence of each [...]
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2017-10-17
09:25
OpenAccess [PUBDB-2017-11437] Journal Article
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Synchrotron X-Ray Scattering Study of Charge-Density-Wave Order in $HgBa_{2}CuO_{4+δ}$
ddc:530
We present a detailed synchrotron x-ray scattering study of the charge-density-wave (CDW) order in simple tetragonal $HgBa_{2}CuO_{4+δ}$ (Hg1201). Resonant soft x-ray scattering measurements reveal that short-range order appears at a temperature that is distinctly lower than the pseudogap temperature and in excellent agreement with a prior transient reflectivity result. [...]
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2017-06-23
14:38
[PUBDB-2017-06005] Contribution to a conference proceedings/Contribution to a book
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The Population of Twin Related Boundaries in High Purity Nickel as measured with near‐field High Energy X‐ray Diffraction Microscopy
8th International Symposium on Superalloy 718 and Derivatives, Meeting locationPittsburgh, PA, USA, 28 Sep 2014 - 1 Oct 20142014-09-282014-10-01 793-804 (2014)
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2017-06-19
13:47
[PUBDB-2017-05454] Journal Article
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High-Resolution Single-Grain Diffraction of Polycrystalline Materials
ddc:530
Polycrystalline bulk materials are ubiquitous in everyday life, including biological, geological, and engineered structural and functional materials. Their fundamental units are individual grains, which are characterized by their microstructure; i.e., the arrangement of lattice defects. [...]
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2017-06-16
10:03
OpenAccess [PUBDB-2017-05205] Journal Article/Contribution to a conference proceedings
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Monitoring microstructural evolution in-situ during cyclic deformation by high resolution reciprocal space mapping
6th International Conference on Fracture Fatigue and Wear, Meeting locationPorto, Portugal, 26 Jul 2017 - 27 Jul 20172017-07-262017-07-27 Journal of physics / Conference Series 843(1), 012031 (2017) [10.1088/1742-6596/843/1/012031]  GO
ddc:530
The recently developed synchrotron technique High Resolution Reciprocal Space Mapping (HRRSM) is used to characterize the deformation structures evolving during cyclic deformation of commercially pure, polycrystalline aluminium AA1050. Insight into the structural reorganization within single grains is gained by in-situ monitoring of the microstructural evolution during cyclic deformation [...]
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2017-06-15
23:02
Embargoed OpenAccess [PUBDB-2017-05176] Journal Article
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Martensite formation during incremental cooling of Fe-Cr-Ni alloys: An in-situ bulk X-ray study of the grain-averaged and single-grain behavior
ddc:670
The formation of martensite (ε and α′) in metastable austenitic Fe-18Cr-(10-11.5)Ni alloys was investigated in-situ during cooling. High-energy X-rays were used to study the bulk of the alloys. [...]
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2017-06-15
22:34
[PUBDB-2017-05175] Journal Article
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Slip systems and dislocation densities in individual grains of polycrystalline aggregates of plastically deformed CoTi and CoZr alloys
ddc:670
A novel X-ray diffraction-based technique for grain-by-grain assessment of dislocation density within polycrystals is applied. The technique discriminates dislocation densities of different slip modes, slip systems and dislocation character. [...]
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