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Article
Open AccessNeutronographic Residual Stress Analysis for Materials With Depth Gradients of the Strain Free Lattice Parameter \({{\varvec{d}}}_{0}\) for the Example of a Case-Hardened Steel 20MnCr5
In the present work, ring-shaped samples made from steel 20MnCr5 were low-pressure carburized (LPC) and subsequently hardened by gas quenching (case-hardened). This results in a near-surface gradient in chemic...
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Chapter and Conference Paper
Strain Monitoring During Laser Metal Deposition of Inconel 718 by Neutron Diffraction
In this study, we provide novel in situ of during laser metal deposition of by . Thermal, phase and stress-related contributions to the lattice parameter evolution are addressed for the representative r...
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Article
In Situ Study of the Stress Relaxation During Aging of Nickel-Base Superalloy Forgings
Nickel-base superalloys are conventionally aged in order to develop a favorable microstructure as well as to relieve residual stresses. Here neutron diffraction was used to follow the evolution of residual str...
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Article
Open AccessA Combined Experimental and Modelling Approach to Elastic–Plastic Crack Driving Force Calculation in the Presence of Residual Stresses
Since all residual stress measurement methods have inherent limitations, it is normally impractical to completely characterise a three-dimensional residual stress field by experimental means. This lack of comp...
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Chapter and Conference Paper
Residual Stress Analysis in AA7449 As-Quenched Thick Plates Using Neutrons and Fe Modelling
In the current trend toward thicker aluminium plates, a major concern is the generation of high internal stresses during quenching, which can cause distortions during machining and pose serious safety concerns...
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Article
Neutron Diffraction Analysis of Complete Residual Stress Tensors in Conventional and Rolled Gas Metal Arc Welds
Mitigation of residual stress in an arc weld by high-pressure rolling of the weld seam has been investigated using neutron diffraction. Rolling was found to greatly improve the residual stress distribution, ca...
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Article
Residual Stresses Distribution Through Thick HVOF Sprayed Inconel 718 Coatings
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Article
Residual Stresses Distribution through Thick HVOF Sprayed Inconel 718 Coatings
Residual stress buildup in thick thermal spray coatings is a property of concern. The adhesion of these coatings to the substrate is influenced by residual stresses that are generated during the coating deposi...
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Article
Neutron Stress Imaging of Drawn Copper Tube: Comparison with Finite-Element Model
Seamless tubes are used for various mechanical applications, often produced by several cold drawing steps to reach the required dimensions. The first process step, for example, extrusion or rolling, typically ...
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Article
Residual stress states before irradiation in ESS target structural materials
The present work takes place in the framework of the European Spallation Source target research and development program. A wide spectrum of miniaturized, mechanical test specimens of different structural mater...
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Article
High-temperature stress evolution in brazed samples for plasma-facing components in fusion reactors
This work has been carried out to investigate, by means of neutron strain scanning, the stress field in brazed samples of interest for the construction of plasma-facing components, such as the ‘divertor’, in f...
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Article
Optimization of a focusing monochromator for neutron strain-scanning diffractometer
Comparison of mosaic and elastically deformed crystals as possible candidates for horizontally focusing monochromators at a high-resolution powder diffractometer is presented. The comparison is based on Monte ...
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Article
Determination of residual stresses at ILL: present and future
The ILL is constructing, in collaboration with the Manchester Materials Science Centre, a neutron strain imager for the non-destructive determination of residual stresses. The project is funded by ILL and the ...
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Article
Yield stress increase in a W/Cu composite observed by neutron diffraction