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2017-03-31
09:45
OpenAccess [PUBDB-2017-01518] Journal Article
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In-situ Monitoring of Laser Surface Line Hardening by Means of Synchrotron X-Ray Diffraction
International Conference on Residual Stresses 2016, ICRS 10, Meeting locationSydney, Australia, 3 Jul 2016 - 7 Jul 20162016-07-032016-07-07
Materials research proceedings 2, 467 - 472 (2016) [10.21741/9781945291173-79]  GO
ddc:620
An in-situ X-ray diffraction investigation of a power controlled laser line hardeningexperiment has been carried out at the synchrotron beamline P05 at the German electron synchrotron(DESY) in Hamburg. During the process the local strain and stress evolution is monitored usingsynchrotron radiation with a time resolution of 10 Hz. [...]
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2017-03-22
15:01
[PUBDB-2017-01453] Journal Article
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Depth resolved near-surface residual stresses in γ-based TiAl before and after high-temperature exposure
ddc:660
The aim of this study was to gain an insight into the development of near-surface stress, which has been proposed to play a role in environmental embrittlement, as a function of depth after exposure. Investigations were performed, using both energy and angle-dispersive X-ray diffraction, to determine the residual stress as a function of depth for flat specimens made from two γ-based TiAl alloys in as-polished and exposed (700 °C/1 h/air) conditions [...]
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2017-03-21
16:21
[PUBDB-2017-01439] Journal Article
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Hot carrier relaxation in CdTe via phonon–plasmon modes
ddc:530
Carrier and lattice dynamics of laser excited CdTe was studied by time-resolved reflectivity for excitation fluences spanning about three orders of magnitude, from 0.064 to 6.14 mJ cm$^{−2}$. At fluences below 1 mJ cm$^{−2}$ the transient reflectivity is dominated by the dynamics of hybrid phonon–plasmon modes [...]
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2017-03-13
16:47
[PUBDB-2017-01368] Journal Article
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Evolution of twinning in extruded AZ31 alloy with bimodal grain structure
ddc:670
Twinning in extruded AZ31 alloy with a bimodal grain structure is studied under compression along the extrusion direction. This study has combined in-situ measurements during the compression tests by Synchrotron Radiation Diffraction and Acoustic Emission techniques and the evaluation of the microstructure and texture in post-mortem compression samples deformed at different strains [...]
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2017-03-08
12:46
OpenAccess [PUBDB-2017-01323] Report/Journal Article
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Inducing Stable $\alpha$ + $\beta$ Microstructures during Selective Laser Melting of Ti-6Al-4V Using Intensified Intrinsic Heat Treatments
[I-20150533 EC]
Materials 10(3), 268 (2017) [10.3390/ma10030268]  GO
ddc:600
Selective laser melting is a promising powder-bed-based additive manufacturing technique for titanium alloys: near net-shaped metallic components can be produced with highresource-efficiency and cost savings. For the most commercialized titanium alloy, namely Ti-6Al-4V, the complicated thermal profile of selective laser melting manufacturing (sharp cycles of steep heating and cooling rates) usually hinders manufacturing of components in a one-step process owing to the formation of brittle martensitic microstructures unsuitable for structural applications. [...]
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2017-02-08
15:30
[PUBDB-2017-00915] Journal Article
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Effects of laser shock peening on the microstructure and fatigue crack propagation behaviour of thin AA2024 specimens
ddc:600
Laser shock peening (LSP) was performed on aluminium alloy AA2024 with a thickness of 2.0 mm. Microstructural studies using the electron back scatter diffraction (EBSD) technique were performed toquantify the micro-texture changes in the material through LSP. [...]
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2017-02-01
17:28
[PUBDB-2017-00829] Journal Article
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C$_{60}$ fullerene enhances cisplatin anticancer activity and overcomes tumor cell drug resistance
Nano research 10(2), 652 - 671 (2017) [10.1007/s12274-016-1324-2]  GO
ddc:540
We formulated and analyzed a novel nanoformulation of the anticancer drug cisplatin (Cis) with C$_{60}$ fullerene (C$_{60}$+Cis complex) and showed its higher toxicity toward tumor cell lines in vitro when compared to Cis alone. The highest toxicity of the complex was observed in HL-60/adr and HL-60/vinc chemotherapy-resistant human leukemia cell sublines (resistant to Adriamycin and Vinculin, respectively). [...]
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2017-01-18
17:00
OpenAccess [PUBDB-2017-00634] Journal Article
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Local flow stresses in interpenetrating-phase composites based on nanoporous gold — In situ diffraction
ddc:670
We report a synchrotron in situ diffraction experiment exploring stress evolution during compression of interpenetrating-phase nanocomposites based on nanoporous gold and polymer.While previous experiments providedindirect indication of local flow conditions based on macroscopic effective flow stress and micromechanicsmodels such as Gibson-Ashby scaling law, the lattice parameter data of our experiment access the flow stress directly.At small structure size we find excellent agreement with previous reports, supporting thematch betweenmaterial andmodel of those studies. Yet, deviations at larger structure size suggest that coarsening generates defectsin metal network structure that are ignored by standard models..
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2017-01-18
16:50
OpenAccess [PUBDB-2017-00633] Journal Article
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High-Temperature Stable Zirconia Particles Doped with Yttrium, Lanthanum, and Gadolinium
ddc:540
Zirconia microspheres synthesized by a wet-chemical sol–gel process arepromising building blocks for various photonic applications considered forheat management and energy systems, including highly effi cient refl ectivethermal barrier coatings and absorbers/emitters used in thermophotovoltaicsystems. As previously shown, pure zirconia microparticles deteriorate atworking temperatures of ≥1000 °C. [...]
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2017-01-18
14:52
[PUBDB-2017-00629] Contribution to a conference proceedings/Contribution to a book
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In Situ Synchrotron Radiation Diffraction of The Solidificationof Mg-Dy(-Zr) Alloys
Magnesium Technology 2016
The 145th Annual Meeting of the Minerals, Metals, and Materials Society, TMS 2016, Meeting locationNashville, USA, 14 Feb 2016 - 18 Feb 20162016-02-142016-02-18
15-21 (2016) [10.1002/9781119274803.ch6]  GO
Mg-Dy alloys are attractive for biomaterial applications. Their mechanical property profile is close to that of cortical bone, they are non-toxic, osseoconductive and degradable. [...]

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