Determination of DC06+ZE Sheet Crack Cause

The present work deals with determination of the cause of crack occurring in a part of car body manufactured from deep-drawing sheet. UHR-SEM, EDS, EBSD and measurement of microhardness were used for evaluation of the structure, local deformation and crack formation mechanism. A material analysis di...

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Bibliographic Details
Published inDiffusion and defect data. Solid state data. Pt. A, Defect and diffusion forum Vol. 368; pp. 121 - 125
Main Authors Pilvousek, Tomáš, Kejzlar, Pavel, Tregler, Michal
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.07.2016
Subjects
Microscopy
Microanalysis
Fracture
Structure
Failure
EBSD
Crack
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Summary:The present work deals with determination of the cause of crack occurring in a part of car body manufactured from deep-drawing sheet. UHR-SEM, EDS, EBSD and measurement of microhardness were used for evaluation of the structure, local deformation and crack formation mechanism. A material analysis discovered foreign particles in the material. These particles were identified as MgAl2O4 with BCC lattice. The occurrence of these hard particles led to local stress concentration, decrease in mechanical strength and sheet breach due to tensile stress during deformation.
Bibliography:Selected, peer reviewed papers from the 12th International Conference "Local Mechanical Properties", November 04-06, 2015, Liberec, Czech Republic
ISSN:1012-0386
1662-9507
1662-9507
DOI:10.4028/www.scientific.net/DDF.368.121