Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 188-211 |
| Number of pages | 24 |
| Journal | International Journal of Plasticity |
| Volume | 122 |
| Early online date | 4 Jul 2019 |
| DOIs | |
| Publication status | Published - Nov 2019 |
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Keywords
- Void growth
- Crystal plasticity
- Multiphase titanium alloys
- Numerical Simulation
- Ductile fracture
- Ductile damage
- Lattice orientation
- Gurson-Type Model
- Constitutive model
- Crystallographic texture
- Lode parameter
- Finite-element-analysis
- Stress triaxiality
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Materials Science(all)
Cite this
A CPFEM based study to understand the void growth in high strength dual-phase Titanium alloy (Ti-10V-2Fe-3Al). / Asim, Umair Bin (Corresponding Author); Siddiq, M. Amir (Corresponding Author); Kartal, Mehmet Emin.
In: International Journal of Plasticity, Vol. 122, 11.2019, p. 188-211.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A CPFEM based study to understand the void growth in high strength dual-phase Titanium alloy (Ti-10V-2Fe-3Al)
AU - Asim, Umair Bin
AU - Siddiq, M. Amir
AU - Kartal, Mehmet Emin
N1 - Author is thankful to University of Aberdeen for the award of Elphinstone Scholarship which covers the tuition fee of PhD study of author. Thanks are also due to Professor R.M. McMeeking for useful discussions.
PY - 2019/11
Y1 - 2019/11
N2 - High strength titanium alloys are generally used in widespread applications ranging over, but not limited to biomedical, aerospace, automotive, marine, oil and gas, and energy. Besides other manufacturing processes, forming is one of the common manufacturing process used to produce components out of these alloys. Forming processes generally involve significant plastic deformation of material under complex multiaxial loading conditions. Titanium alloys undergo considerable plastic deformation before failure while later is governed by the mechanisms of void nucleation, growth and coalescence. A number of titanium alloys used for high strength applications are multiphase alloys having α and β phases. It has been reported in the past that the voids tend to nucleate on the phase boundaries. This study is focused on understanding the growth of the nucleated voids at two selected locations in a dual phase titanium alloy (Ti-10V-2Fe-3Al); globular phase (hexagonal closed pack, HCP) and at the interface of lamellar and phases ( - HCP and – body centred cubic, BCC). This is one of the very few 3D representative volume element (RVE) study of void growth in single crystal titanium (HCP), carried out using crystal plasticity finite element modelling (CPFEM) at higher triaxialities (ranging 1/3-3) and the first one on the interface of bicrystals with different crystal symmetry. The effects of initial porosity, crystal orientation and the Lode parameter on void growth in single crystal (-HCP) has been studied and it is found that they affects void growth considerably. An effort has been made to explain the physics behind it. In the second part, growth in a void at the interface of two distinct single crystals ( - HCP and –BCC) was studied. The effects of Burgers orientation relationship (BOR) variant of the two phases, initial porosity, and phase boundary inclination (PBI) on void growth is investigated. It is found that the PBI has a very strong impact on the void growth. The effect of initial porosity is similar to the void growth in single crystals. Choice of BOR variant affected the void growth in moderate triaxialities.
AB - High strength titanium alloys are generally used in widespread applications ranging over, but not limited to biomedical, aerospace, automotive, marine, oil and gas, and energy. Besides other manufacturing processes, forming is one of the common manufacturing process used to produce components out of these alloys. Forming processes generally involve significant plastic deformation of material under complex multiaxial loading conditions. Titanium alloys undergo considerable plastic deformation before failure while later is governed by the mechanisms of void nucleation, growth and coalescence. A number of titanium alloys used for high strength applications are multiphase alloys having α and β phases. It has been reported in the past that the voids tend to nucleate on the phase boundaries. This study is focused on understanding the growth of the nucleated voids at two selected locations in a dual phase titanium alloy (Ti-10V-2Fe-3Al); globular phase (hexagonal closed pack, HCP) and at the interface of lamellar and phases ( - HCP and – body centred cubic, BCC). This is one of the very few 3D representative volume element (RVE) study of void growth in single crystal titanium (HCP), carried out using crystal plasticity finite element modelling (CPFEM) at higher triaxialities (ranging 1/3-3) and the first one on the interface of bicrystals with different crystal symmetry. The effects of initial porosity, crystal orientation and the Lode parameter on void growth in single crystal (-HCP) has been studied and it is found that they affects void growth considerably. An effort has been made to explain the physics behind it. In the second part, growth in a void at the interface of two distinct single crystals ( - HCP and –BCC) was studied. The effects of Burgers orientation relationship (BOR) variant of the two phases, initial porosity, and phase boundary inclination (PBI) on void growth is investigated. It is found that the PBI has a very strong impact on the void growth. The effect of initial porosity is similar to the void growth in single crystals. Choice of BOR variant affected the void growth in moderate triaxialities.
KW - Void growth
KW - Crystal plasticity
KW - Multiphase titanium alloys
KW - Numerical Simulation
KW - Ductile fracture
KW - Ductile damage
KW - Lattice orientation
KW - Gurson-Type Model
KW - Constitutive model
KW - Crystallographic texture
KW - Lode parameter
KW - Finite-element-analysis
KW - Stress triaxiality
UR - http://www.mendeley.com/research/cpfem-based-study-understand-void-growth-high-strength-dualphase-titanium-alloy-ti10v2fe3al
UR - http://www.scopus.com/inward/record.url?scp=85071903706&partnerID=8YFLogxK
U2 - 10.1016/j.ijplas.2019.07.002
DO - 10.1016/j.ijplas.2019.07.002
M3 - Article
VL - 122
SP - 188
EP - 211
JO - International Journal of Plasticity
JF - International Journal of Plasticity
SN - 0749-6419
ER -