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2019-11-12
07:57
DBCoverage [PUBDB-2019-04139] Journal Article
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Full-field structured-illumination super-resolution X-ray transmission microscopy
Modern transmission X-ray microscopy techniques provide very high resolution at low and medium X-ray energies, but suffer from a limited field-of-view. If sub-micrometre resolution is desired, their field-of-view is typically limited to less than one millimetre. [...]
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ddc:500
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2019-11-11
16:37
[PUBDB-2019-04129] Journal Article

Setting the Stage for Fabrication of Self-Assembled Structures in Compact Geometries: Inside-Out Isoporous Hollow Fiber Membranes
Fabrication of evaporation-induced self-assembled structures on easily accessible surfaces is an established strategy, while achieving such microphase-separated structures in compact geometries has been a long-standing goal. The requirement of comparatively less concentrated block copolymer (BCP) solution to pass through the compact geometries significantly reduces the stimulations required for self-assembly. [...]
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ddc:540
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2019-11-11
15:54
[PUBDB-2019-04120] Journal Article
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Self-assembly of block copolymers during hollow fiber spinning: an in situ small-angle X-ray scattering study
Nanoscale 11, 7634-7647 () [10.1039/C8NR06892E]  GO
We investigated the self-assembly of block copolymers during hollow fiber membrane (HFM) fabricationby conducting in situ small angle X-ray scattering (SAXS) and ex situ scanning electron microscopy (SEM)studies. SAXS enables us to follow the structural rearrangements after extrusion at different distances fromthe spinning nozzle. [...]
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ddc:600
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2019-11-04
10:13
[PUBDB-2019-03869] Journal Article/Contribution to a conference proceedings
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In Situ Structural Characterization of Functionally Graded Ni–Ti Shape Memory Alloy During Tensile Loading
11th European Symposium on Martensitic Transformations, ESOMAT 2018, MetzMetz, France, 27 Aug 2018 - 31 Aug 20182018-08-272018-08-31 Shape memory and superelasticity () [10.1007/s40830-019-00237-2]  GO
A functionally graded NiTi shape memory alloywire was investigated by in situ synchrotron radiationbasedX-ray diffraction (SR-XRD) during cyclic tensiledeformation. The transformation temperatures were determinedby DSC and the thermomechanical behaviour wasanalysed by three-point bending test. [...]
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ddc:530
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2019-10-21
17:17
OpenAccess [PUBDB-2019-03718] Journal Article
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Diffraction-based determination of single-crystal elastic constants of polycrystalline titanium alloys
Single-crystal elastic constants have been derived by lattice strain measurements using neutron diffraction on polycrystalline Ti-6Al-4V, Ti-6Al-2Sn-4Zr-6Mo and Ti-3Al-8V-6Cr-4Zr-4Mo alloy samples. A variety of model approximations for the grain-to-grain interactions, namely approaches by Voigt, Reuss, Hill, Kroener, de Wit and Matthies, including texture weightings, have been applied and compared. [...]
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ddc:540
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2019-10-14
12:05
[PUBDB-2019-03667] Journal Article
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Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
The influence of β′ and γ' precipitates on prismatic and basal planes and long-period stacking ordered (LPSO) fibers on the compressive behavior of high strength Mg-Gd-Y-Zn alloy was investigated using the combination of in-situ synchrotron radiation diffraction and acoustic emission, as well as transmission electron microscopy. After extrusion, the microstructure is characterized by highly oriented LPSO fibers elongated along the extrusion direction within the magnesium matrix. [...]
ddc:530
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2019-10-05
10:59
OpenAccess [PUBDB-2019-03594] Journal Article
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A custom built lathe designed for in operando high-energy x-ray studies at industrially relevant cutting parameters
We present a custom built lathe designed for in operando high-energy x-ray scattering studies of thetool-chip and tool-workpiece contact zones during operation. The lathe operates at industriallyrelevant cutting parameters, i.e [...]
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ddc:620
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2019-09-12
14:07
Embargoed OpenAccess [PUBDB-2019-03297] Journal Article
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Follow-up structural evolution of Ni/Ti reactive nano and microlayers during diffusion bonding of NiTi to Ti6Al4V in a synchrotron beamline
Reaction-Assisted Diffusion Bonding (RADB) of NiTi to Ti6Al4V using either magnetron sputtered Ni/Ti nanomultilayersor Ni/Ti commercial microfoils as filler material was studied. The joining process takes advantage ofthe exothermal reactive character of the Ni-Ti system to provide extra energy during the bonding process.Therefore, sound joints could be achieved at lower thermal conditions. [...]
Published on 2019-08-08. Available in OpenAccess from 2020-08-08.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:670
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2019-09-12
12:46
Embargoed OpenAccess [PUBDB-2019-03295] Journal Article
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Growth and coarsening kinetics of gamma prime precipitates in CMSX-4 under simulated additive manufacturing conditions
Additive manufacturing of superalloys offers new opportunities for alloy design but also poses significant processing difficulties. While the γ′ phase is responsible for the excellent high-temperature resistance of these alloys, it also induces cracking by precipitation hardening during manufacturing. [...]
Published on 2019-08-28. Available in OpenAccess from 2020-08-28.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:670
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2019-09-11
17:52
[PUBDB-2019-03294] Contribution to a conference proceedings/Contribution to a book
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Thermo-mechanical Processing of EZK Alloys in a Synchrotron Radiation Beam
Magnesium Technology 2019 / Joshi, Vineet V. (Editor) ; Cham : Springer International Publishing, 2019, Chapter 44 ; ISSN: 2367-1181=2367-1696 ; ISBN: 978-3-030-05788-6=978-3-030-05789-3 ; doi:10.1007/978-3-030-05789-3
the 148th Annual Meeting & Exhibition of the Minerals, Metals & Materials Society, TMS 2019, San AntonioSan Antonio, USA, 10 Mar 2019 - 14 Mar 20192019-03-102019-03-14
Cham : Springer International Publishing, The Minerals, Metals & Materials Series 297 - 303 () [10.1007/978-3-030-05789-3_44]  GO
Nd, a rare earth element with low solid solubility in Mg, is an ideal alloying element to improve elevated temperature yield strength and creep resistance cost effectively. The addition of Zn leads to further improvement in the elevated temperature properties; therefore, Mg–Nd–Zn alloys are prospective materials for structural and medical applications. [...]

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