An Automated Visual Inspection System for the Classification of the Phases of Ti-6Al-4V Titanium Alloy

Ducato, Antonino; Fratini, Livan; Cascia, Marco La; Mazzola, Giuseppe

doi:10.1007/978-3-642-40246-3_45

Cited by 26 publications

(11 citation statements)

References 15 publications

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“…Ti6Al4V in an α + β alloy exhibited prolonged biocompatibility, high fatigue resistance and toughness, as well as higher tensile strength and density (4.41 g/cm 3 , [ 6 ]) than AlSi10Mg alloy [ 17 , 18 ]. At the same time, its corrosion resistance makes it possible to use in marine and chemical industries and in the biomedical field for orthopedic, cranial and orthodontic implants [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Ghio

Cerri

2022

Materials

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Laser powder bed fusion (L-PBF) is an additive manufacturing technology that is gaining increasing interest in aerospace, automotive and biomedical applications due to the possibility of processing lightweight alloys such as AlSi10Mg and Ti6Al4V. Both these alloys have microstructures and mechanical properties that are strictly related to the type of heat treatment applied after the L-PBF process. The present review aimed to summarize the state of the art in terms of the microstructural morphology and consequent mechanical performance of these materials after different heat treatments. While optimization of the post-process heat treatment is key to obtaining excellent mechanical properties, the first requirement is to manufacture high quality and fully dense samples. Therefore, effects induced by the L-PBF process parameters and build platform temperatures were also summarized. In addition, effects induced by stress relief, annealing, solution, artificial and direct aging, hot isostatic pressing, and mixed heat treatments were reviewed for AlSi10Mg and Ti6AlV samples, highlighting variations in microstructure and corrosion resistance and consequent fracture mechanisms.

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Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Ghio

Cerri

2022

Materials

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“…At 610 o C a process of crystallization takes place for the 45S5 composition, and another one around 800 o C, these temperatures vary depending on the size particle or thickness of the coating and the heating conditions [31]. Besides, the chosen temperatures were designated in a range were titanium alloy crystal structures remain unchanged [32]. The heating rate should be slow to avoid large temperature gradients and stresses which could result in cracking of the material.…”

Section: Coating Depositionmentioning

confidence: 99%

Adhesion improvement and in vitro characterisation of 45S5 bioactive glass coatings obtained by atmospheric plasma spraying

Garrido

Cano

Dosta

2021

Surface and Coatings Technology

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“…This is due to the high-temperature gradient and the high solidification rate in the melting pool. This microstructure results in rather low elongation (EL) and a low strainhardening rate of as-printed Ti6Al4V samples (Ahmed and Rack, 1998;Ducato et al, 2013;Huang et al, 2016;Barriobero-Vila et al, 2017). It has also been widely reported that there was a high residual stress in as-printed Ti6Al4V (Simonelli et al, 2014;Yadroitsev and Yadroitsava, 2015;Yadroitsava et al, 2015;Parry et al, 2016).…”

Section: Introductionmentioning

confidence: 96%

Machine learning model to predict tensile properties of annealed Ti6Al4V parts prepared by selective laser melting

Yang

Sisson

et al. 2022

AIEDAM

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In this work, an artificial neural network model is established to understand the relationship among the tensile properties of as-printed Ti6Al4V parts, annealing parameters, and the tensile properties of annealed Ti6Al4V parts. The database was established by collecting published reports on the annealing treatment of selective laser melting (SLM) Ti6Al4V, from 2006 to 2020. Using the established model, it is possible to prescribe annealing parameters and predict properties after annealing for SLM Ti-6Al-4V parts with high confidence. The model shows high accuracy in the prediction of yield strength (YS) and ultimate tensile strength (UTS). It is found that the YS and UTS are sensitive to the annealing parameters, including temperature and holding time. The YS and UTS are also sensitive to initial YS and UTS of as-printed parts. The model suggests that an annealing process of the holding time of fewer than 4 h and the holding temperature lower than 850°C is desirable for as-printed Ti6Al4V parts to reach the YS required by the ASTM standard. By studying the collected data of microstructure and tensile properties of annealed Ti6Al4V, a new Hall-Petch relationship is proposed to correlate grain size and YS for annealed SLM Ti6Al4V parts in this work. The prediction of strain to failure shows lower accuracy compared with the predictions of YS and UTS due to the large scattering of the experimental data collected from the published reports.

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An Automated Visual Inspection System for the Classification of the Phases of Ti-6Al-4V Titanium Alloy

Cited by 26 publications

References 15 publications

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects

Adhesion improvement and in vitro characterisation of 45S5 bioactive glass coatings obtained by atmospheric plasma spraying

Machine learning model to predict tensile properties of annealed Ti6Al4V parts prepared by selective laser melting

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