Title: Full 3D Spatially Resolved Mapping of Residual Strain in a 316L Austenitic Stainless Steel Weld Specimen
Authors: MARTINS ReneOHMS CarstenDECROOS Koenraad
Citation: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING vol. 527 p. 4779-4787
Publisher: ELSEVIER SCIENCE SA
Publication Year: 2010
JRC N°: JRC56333
ISSN: 0921-5093
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC56333
DOI: 10.1016/j.msea.2010.03.110
Type: Articles in Journals
Abstract: A three-pass slot weld specimen in austenitic stainless steel 316L, manufactured for the purpose of benchmarking Finite Element weld residual stress simulation codes, is currently undergoing extensive characterization within a research network. A comprehensive data set from nondestructive full three dimensional spatially resolved macro-strain mapping in this specimen is presented here. Focussed high-energy synchrotron radiation together with the spiral slit technique was used to obtain depth-resolved information about the variation of lattice parameters. A novel full pattern analysis approach, based on the evaluation of distinct diffraction spots from individual grains, was developed. The results show high tensile transverse stresses within the bead deposited first. The maximum longitudinal stresses were found beneath the slot. Furthermore significant weld start- and stop-effects were observed. The validity of the results is discussed with respect to the possible impact of intergranular strains due to plastic deformation.
JRC Institute:Institute for Energy and Transport

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