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Multi-scan laser forming: Synchrotron strain scanning and microstructure evolution

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dc.contributor.author Topic M.N. en
dc.contributor.author McGrath P. en
dc.contributor.author Vorster W.J.J. en
dc.contributor.author Zhang S.Y. en
dc.contributor.author Bucher R. en
dc.contributor.author Venter A. en
dc.contributor.author Korsunsky A.M. en
dc.date.accessioned 2012-11-01T16:31:27Z
dc.date.available 2012-11-01T16:31:27Z
dc.date.issued 2007 en
dc.identifier.citation Journal of Strain Analysis for Engineering Design en
dc.identifier.citation 42 en
dc.identifier.citation 7 en
dc.identifier.issn 3093247 en
dc.identifier.other 10.1243/03093247JSA300 en
dc.identifier.uri http://hdl.handle.net/10500/7241
dc.description.abstract Residual elastic strain and microstructural transformations resulting from high thermal gradients introduced by industrial-strength laser forming of mild steel are reported in this article. An 8 mm thick steel plate was bent to a total bending angle of 1.2° by running a laser three successive times across the length of the plate. Thin through-thickness slices of the plate were prepared for synchrotron energy-dispersive X-ray diffraction experiments from which lattice strains were calculated by measuring peak shifts in the diffraction patterns. The diffraction patterns were analysed by means of Rietveld refinement using the general structure analysis system allowing the spatially resolved mapping of relevant strain components needed for full-field eigenstrain determination in the plate. Comparison of the measured residual elastic strain fields and metallographic analyses of the steel plate suggests that a correlation exists between the residual elastic strains and metallurgical processes. The present study serves the purpose of developing a better understanding of the laser forming process and its implications on structural integrity and in-service reliability of components. It also provides a foundation for further in-depth studies into the interaction between lasers and structural materials © IMechE 2007. en
dc.language.iso en en
dc.subject Laser forming process; Residual stress; X-ray diffraction Bending (deformation); Microstructure; Residual stresses; Thermal gradients; X ray diffraction analysis; Laser forming process; Microstructural transformations; Synchrotron energy; Synchrotron strain scanning; Strain measurement en
dc.title Multi-scan laser forming: Synchrotron strain scanning and microstructure evolution en
dc.type Article en


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