Localisation of plastic deformation in friction stir and electron beam copper welds

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Optical strain measurement through digital image correlation during tensile testing was utilised to study the effect of strain rate and welding defects on localisation of plastic deformation in friction stir welded and electron beam welded phosphorous-alloyed oxygen-free copper. Welds cut from fullsize nuclear waste copper canisters and additionally made defective welds were studied. Optical strain measurement represents a new way of studying deformation of materials and obtaining local material data. The data was used to construct strain maps and estimate local true stress–strain curves. Using Gini oefficients to quantify strain localisation, it appears that the lower strain rate resulted in slightly faster localisation of plastic deformation with lower stress level.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1119-1129
JulkaisuMaterials Science and Technology
Vuosikerta33
Numero9
Varhainen verkossa julkaisun päivämäärä12 lokakuuta 2016
TilaJulkaistu - 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 9599431