G. Johnson
University of Manchester
11 Papers
66 Citations
G. Johnson is an academic researcher from University of Manchester. The author has contributed to research in topics: Diffraction & Intergranular corrosion. The author has an hindex of 8, co-authored 11 publications. Previous affiliations of G. Johnson include Institut national des sciences Appliquées de Lyon & European Synchrotron Radiation Facility.
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Papers
Observations of intergranular stress corrosion cracking in a grain-mapped polycrystal.
Andrew T. King,Andrew T. King,G. Johnson,G. Johnson,Dirk Engelberg,Wolfgang Ludwig,James Marrow +6 more
TL;DR: Several sensitization-resistant crack-bridging boundaries were identified, and although they have special geometric properties, they are not the twin variant boundaries usually maximized during grain boundary engineering.
X-ray diffraction contrast tomography: a novel technique for three-dimensional grain mapping of polycrystals. I. Direct beam case
G. Johnson,G. Johnson,Andrew T. King,Andrew T. King,Marcelo Goncalves Honnicke,James Marrow,Wolfgang Ludwig,Wolfgang Ludwig +7 more
TL;DR: In this paper, Johnson et al. proposed a novel technique for nondestructive and simultaneous mapping of the three-dimensional grain and the absorption microstructure of a material using X-ray diffraction contrast tomography.
Three-dimensional grain mapping by x-ray diffraction contrast tomography and the use of Friedel pairs in diffraction data analysis.
Wolfgang Ludwig,Péter Reischig,Andrew King,Michael Herbig,Erik Mejdal Lauridsen,G. Johnson,Thomas James Marrow,Jean-Yves Buffiere +7 more
TL;DR: A modified DCT data acquisition strategy is described which permits the incorporation of an innovative Friedel pair method for analyzing diffraction data, resulting in an increase in the accuracy with which the diffraction vectors are determined.
High Resolution X-ray Tomography of Short Fatigue Crack Nucleation in Austempered Ductile Cast Iron
TL;DR: In this paper, high-resolution X-ray tomography with synchrotron radiation has been used to obtain observations of the early stages of fatigue crack nucleation in an austempered ductile cast iron.
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Characterization of laser peening residual stresses in Al 7075 by synchrotron diffraction and the contour method
TL;DR: In this article, the residual stress state has been characterized in two Al 7075 plate samples, one laser peened only at its centre and the other overlap peened over most of the top surface.
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