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Strain localization...
Strain localization and crack formation effects on stress-strain response of ductile iron
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- Kasvayee, Keivan Amiri, 1986- (author)
- Jönköping University,JTH, Material och tillverkning,School of Engineering, Jönköping University, Sweden
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- Ghassemali, Ehsan, 1983- (author)
- Jönköping University,JTH, Material och tillverkning,School of Engineering, Jönköping University, Sweden
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- Salomonsson, Kent (author)
- Jönköping University,JTH, Produktutveckling,School of Engineering, Jönköping University, Sweden
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- Sujakhu, S. (author)
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
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- Castagne, S. (author)
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
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- Jarfors, Anders E.W. 1963- (author)
- Jönköping University,JTH, Material och tillverkning,School of Engineering, Jönköping University, Sweden
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(creator_code:org_t)
- Elsevier, 2017
- 2017
- English.
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In: Materials Science & Engineering. - : Elsevier. - 0921-5093 .- 1873-4936. ; 702, s. 265-271
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Abstract
Subject headings
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- The strain localization and crack formation in ferritic-pearlitic ductile iron under tension was investigated by in-situ tensile tests. In-situ tensile tests under optical microscope were performed and the onset of the early ferrite-graphite decohesions and micro-cracks inside the matrix were studied. The results revealed that early ferrite-graphite decohesion and micro-cracks inside the ferrite were formed at the stress range of 280–330 MPa, where a kink occurred in the stress-strain response, suggesting the dissipation of energy in both plastic deformation and crack initiation. Some micro-cracks initiated and propagated inside the ferrite but were arrested within the ferrite zone before propagating in the pearlite. Digital Image Correlation (DIC) was used to measure local strains in the deformed micrographs obtained from the in-situ tensile test. Higher strain localization in the microstructure was measured for the areas in which the early ferrite-graphite decohesions occurred or the micro-cracks initiated. © 2017 Elsevier B.V.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Cracking
- Digital image correlation
- Graphite-matrix decohesion
- In-situ tensile test
- Micro-crack
- Crack initiation
- Ductility
- Ferrite
- Ferritic steel
- Graphite
- Image analysis
- Pearlite
- Strain
- Strain measurement
- Tensile testing
- D. digital image correlation (DIC)
- De-cohesion
- Digital image correlations
- Local strains
- Strain localizations
- Stress range
- Stress-strain response
- Cracks
Publication and Content Type
- ref (subject category)
- art (subject category)
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