| dc.contributor.author | Muiruri, Amos | |
| dc.contributor.author | Maringa, Maina | |
| dc.contributor.author | Du Preez, Willie | |
| dc.date.accessioned | 2025-10-25T21:10:40Z | |
| dc.date.available | 2025-10-25T21:10:40Z | |
| dc.date.issued | 2021 | |
| dc.identifier.citation | Muiruri, A.; Maringa, M.; du Preez,W. Validation of a Microstructure-Based Model for Predicting the High Strain Rate Flow Properties of Various Forms of Additively Manufactured Ti6Al4V(ELI) Alloy. Metals 2021, 11, 1628. https://doi.org/10.3390/ met11101628 | en_US |
| dc.identifier.uri | https://doi.org/10.3390/ met11101628 | |
| dc.identifier.uri | http://repository.mut.ac.ke:8080/xmlui/handle/123456789/6706 | |
| dc.description.abstract | To increase the acceptance of directmetal laser sintered Ti6Al4V(Extra Low Interstitial—ELI)
in industry, analytical models that can quantitatively describe the interrelationships between the
microstructural features, field variables, such as temperature and strain rate, and the mechanical properties
are necessary. In the present study, a physical model that articulates the critical microstructural
features of grain sizes and dislocation densities for use in predicting the mechanical properties of
additively manufactured Ti6Al4V(ELI) was developed. The flow stress curves of different microstructures
of the alloy were used to obtain and refine the parameters of the physical model. The average
grain size of a microstructure was shown to influence the athermal part of yield stress, while the
initial dislocation density in a microstructure was seen to affect the shape of the flow stress curve.
The viscous drag effect was also shown to play a critical role in explaining the upturn of flow stress
at high strain rates. The microstructure-based constitutive model developed and validated in this
article using experimental data showed good capacity to predict the high strain rate flow properties
of additively manufactured Ti6Al4V(ELI) alloy. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Metals | en_US |
| dc.subject | DMLS; Ti6Al4V(ELI); constitutive model; flow stress; grain size; dislocation density; validation; yield stress; strain hardening | en_US |
| dc.title | Validation of a Microstructure-Based Model for Predicting the High Strain Rate Flow Properties of Various Forms of Additively Manufactured Ti6Al4V(ELI) Alloy | en_US |
| dc.type | Article | en_US |
