Abstract
Finite element analyses based on 3D images of the microstructure in an aluminum alloy observed by X-ray microtomography (so called image-based finite element analysis=IB-FEA) were performed to assess the influences of microstructures on ductile fracture behavior. The exact microstructural features of the aluminum alloy (i.e. hydrogen pores and particles) were perfectly reproduced in the FE models. The microstructural parameters (e.g. diameter, sphericity, volume of pores/particles) were quantified through a handmade software. IB-FEA provided indirect measure of ductility (or risk of ductile fracture), extracting the damage-/fracture-related values (e.g. z-axis normal stress, stress triaxiality and equivalent plastic strain) through simple elasto-plastic simulations. This made it possible to discuss the microstructure-ductility relationship. Dimensionality reduction of data was performed to filter out the microstructural parameters that do not contribute to ductility by quantitative analysis of the importance of the individual microstructural parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 96-106 |
| Number of pages | 11 |
| Journal | Materials Science and Engineering A |
| Volume | 671 |
| DOIs | |
| Publication status | Published - Aug 1 2016 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Ductile fracture via hydrogen pore mechanism in an aluminum alloy; quantitative microstructural analysis and image-based finite element analysis. / Hosokawa, Akihide; Toda, Hiroyuki; Batres, Rafael; Li, Han; Kuwazuru, Osamu; Kobayashi, Masakazu; Yakita, Hidetaka.
In: Materials Science and Engineering A, Vol. 671, 01.08.2016, p. 96-106.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ductile fracture via hydrogen pore mechanism in an aluminum alloy; quantitative microstructural analysis and image-based finite element analysis
AU - Hosokawa, Akihide
AU - Toda, Hiroyuki
AU - Batres, Rafael
AU - Li, Han
AU - Kuwazuru, Osamu
AU - Kobayashi, Masakazu
AU - Yakita, Hidetaka
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Finite element analyses based on 3D images of the microstructure in an aluminum alloy observed by X-ray microtomography (so called image-based finite element analysis=IB-FEA) were performed to assess the influences of microstructures on ductile fracture behavior. The exact microstructural features of the aluminum alloy (i.e. hydrogen pores and particles) were perfectly reproduced in the FE models. The microstructural parameters (e.g. diameter, sphericity, volume of pores/particles) were quantified through a handmade software. IB-FEA provided indirect measure of ductility (or risk of ductile fracture), extracting the damage-/fracture-related values (e.g. z-axis normal stress, stress triaxiality and equivalent plastic strain) through simple elasto-plastic simulations. This made it possible to discuss the microstructure-ductility relationship. Dimensionality reduction of data was performed to filter out the microstructural parameters that do not contribute to ductility by quantitative analysis of the importance of the individual microstructural parameters.
AB - Finite element analyses based on 3D images of the microstructure in an aluminum alloy observed by X-ray microtomography (so called image-based finite element analysis=IB-FEA) were performed to assess the influences of microstructures on ductile fracture behavior. The exact microstructural features of the aluminum alloy (i.e. hydrogen pores and particles) were perfectly reproduced in the FE models. The microstructural parameters (e.g. diameter, sphericity, volume of pores/particles) were quantified through a handmade software. IB-FEA provided indirect measure of ductility (or risk of ductile fracture), extracting the damage-/fracture-related values (e.g. z-axis normal stress, stress triaxiality and equivalent plastic strain) through simple elasto-plastic simulations. This made it possible to discuss the microstructure-ductility relationship. Dimensionality reduction of data was performed to filter out the microstructural parameters that do not contribute to ductility by quantitative analysis of the importance of the individual microstructural parameters.
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UR - http://www.scopus.com/inward/citedby.url?scp=84975867875&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2016.06.037
DO - 10.1016/j.msea.2016.06.037
M3 - Article
AN - SCOPUS:84975867875
VL - 671
SP - 96
EP - 106
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -