| 1. |
- Alam, Assad, et al.
(author)
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Cooperative driving according to Scoop
- 2011
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Reports (other academic/artistic)abstract
- KTH Royal Institute of Technology and Scania are entering the GCDC 2011 under the name Scoop –Stockholm Cooperative Driving. This paper is an introduction to their team and to the technical approach theyare using in their prototype system for GCDC 2011.
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| 2. |
- Andersson, Roger, et al.
(author)
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Large Housing Estates in Stockholm and Jönköping, Sweden : Opinions of residents on recent developments
- 2005
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Reports (other academic/artistic)abstract
- RESTATE is the acronyme for Restructuring Large-scale Housing Estates in European Cities: Good Practices and New Visions for Sustainable Neighbourhoods and Cities. All the participants in this project share the basic underlying conviction: if the problems of these large-scale housing estates are not resolved, they will increasingly hinder the good economic functioning of cities. The study draws on estates in ten European countries: France, Germany, Hungury, Italy, the Netherlands, Poland, Slovenia, Spain, Sweden and the United Kingdom. Most results in this report are based on a survey carried out in the estates. The opinions and experiences of the inhabitants of the estates stand to the fore in this survey. This report is concerned with two Swedish cities, Stockholm and Jönköping; the same kind of information for estates in other countries in the RESTATE project can be found in parallel reports.
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| 5. |
- Beye, Martin, et al.
(author)
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Chemical Bond Activation Observed with an X-ray Laser
- 2016
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In: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 7:18, s. 3647-3651
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Journal article (peer-reviewed)abstract
- The concept of bonding and antibonding orbitals is fundamental in chemistry. The population of those orbitals and the energetic difference between the two reflect the strength of the bonding interaction. Weakening the bond is expected to reduce this energetic splitting, but the transient character of bond-activation has so far prohibited direct experimental access. Here we apply time-resolved soft X-ray spectroscopy at a free electron laser to directly observe the decreased bonding antibonding splitting following bond-activation using an ultrashort optical laser pulse.
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| 6. |
- Chen, Chen, et al.
(author)
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Solvation structures of protons and hydroxide ions in water
- 2013
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In: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 138:15, s. 154506-
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Journal article (peer-reviewed)abstract
- X-ray Raman spectroscopy (XRS) combined with small-angle x-ray scattering (SAXS) were used to study aqueous solutions of HCl and NaOH. Hydrated structures of H+ and OH- are not simple mirror images of each other. While both ions have been shown to strengthen local hydrogen bonds in the hydration shell as indicated by XRS, SAXS suggests that H+ and OH- have qualitatively different long-range effects. The SAXS structure factor of HCl (aq) closely resembles that of pure water, while NaOH (aq) behaves similar to NaF (aq). We propose that protons only locally enhance hydrogen bonds while hydroxide ions induce tetrahedrality in the overall hydrogen bond network of water.
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| 7. |
- Chou, Chia-Ying, et al.
(author)
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Precipitation kinetics during post-heat treatment of a L-PBF processed SS446 ferritic stainless steel
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Other publication (other academic/artistic)abstract
- The microstructure response to post-heat treatments of SS446 ferritic stainless steel processed by laser powder bed fusion is investigated, with focus on the precipitation kinetics of Cr2N. Precipitation simulations are conducted using the precipitation module (TC-PRISMA) within the Thermo-Calc Software Package. The annealed microstructure is characterized by scanning electron microscopy and the results are used for model validation and calibration. The microstructure and hardness responses to post heat treatments is discussed in terms of optimal solid-solution strengthening in SS446 ferritic stainless steel alloys processed by laser-powder bed fusion.
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| 8. |
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| 9. |
- Chou, Chia-Ying, et al.
(author)
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Precipitation Kinetics During Post-heat Treatment of an Additively Manufactured Ferritic Stainless Steel
- 2022
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In: Metallurgical and Materials Transactions. A. - : Springer Nature. - 1073-5623 .- 1543-1940. ; 53:8, s. 3073-3082
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Journal article (peer-reviewed)abstract
- The microstructure response of laser-powder bed fusion (L-PBF)-processed ferritic stainless steel (AISI 441) during post-heat treatments is studied in detail. Focus is on the precipitation kinetics of the Nb-rich phases: Laves (Fe2Nb) and the cubic carbo-nitride (NbC), as well as the grain structure evolution. The evolution of the precipitates is characterized using scanning and transmission electron microscopy (SEM and TEM) and the experimental results are used to calibrate precipitation kinetics simulations using the precipitation module (TC-PRISMA) within the Thermo-Calc Software package. The calculations reproduce the main trend for both the mean radii for the Laves phase and the NbC, and the amount of Laves phase, as a function of temperature. The calibrated model can be used to optimize the post-heat treatment of additively manufactured ferritic stainless steel components and offer a creator tool for process and structure linkages in an integrated computational materials engineering (ICME) framework for alloy and process development of additively manufactured ferritic steels.
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