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New 3D model for accurate prediction of thermal and microstructure evolution of laser powder cladding of Ti6Al4V alloy.

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Title: New 3D model for accurate prediction of thermal and microstructure evolution of laser powder cladding of Ti6Al4V alloy.
Authors: Youssef, Doaa1 (AUTHOR), Hassab-Elnaby, Salah1 (AUTHOR), Al-Sayed, Samar Reda1 (AUTHOR) sreda@niles.edu.eg
Source: Alexandria Engineering Journal. May2022, Vol. 61 Issue 5, p4137-4158. 22p.
Subjects: Titanium powder, Hard materials, Titanium alloys, Phase transitions, Microstructure, Alloy powders
Abstract: [Display omitted] The high corrosion resistance, low density, and useful biological activity with heat resistance of titanium alloys have made them the most outstanding choice in various industrial applications. However, their poor tribological properties inhibit utilizing them in applications that need abrasive and adhesive wear resistance. Laser cladding is being applied to increase the capabilities of such alloys by allowing the deposition of different hard coating materials. This paper attempts to study the thermal, microstructure, and clad layer geometry evolution during coaxial laser cladding of Ti6Al4V titanium alloy with tungsten carbide + nickel-based alloy preblended powder. Owing to the difficulty in experimentally measuring the thermal and microstructure evolution due to lots of laser processing parameters, a new three-dimensional numerical model based on finite-difference analysis for studying the entire process has been proposed. The behavior of the different thermophysical properties of WC, NiCrBSiC, and Ti6Al4V materials, as well as the phase transition based on latent heat and fluid dynamics considering materials velocity, viscosity, and buoyancy force, during melting and resolidification processes, were considered to improve and ensure the accuracy of the numerical model. The proposed model could be applied to accurately estimate the temperature history and the deposited clad layer morphology and geometry. The cooling rate and thermal gradient were investigated to predict the solidification rate and microstructure by using different laser cladding parameters. It was confirmed that the laser power has a substantial impact on the peak temperature in the melt-pool, while the laser scanning speed has a significant effect on the heating and cooling rates. In conclusion, the process parameters have to be carefully chosen to certify a good quality clad layer with the preservation of the WC particles. [ABSTRACT FROM AUTHOR]
Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 156519605
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: New 3D model for accurate prediction of thermal and microstructure evolution of laser powder cladding of Ti6Al4V alloy.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Youssef%2C+Doaa%22">Youssef, Doaa</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hassab-Elnaby%2C+Salah%22">Hassab-Elnaby, Salah</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Al-Sayed%2C+Samar+Reda%22">Al-Sayed, Samar Reda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sreda@niles.edu.eg</i>
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  Data: <searchLink fieldCode="JN" term="%22Alexandria+Engineering+Journal%22">Alexandria Engineering Journal</searchLink>. May2022, Vol. 61 Issue 5, p4137-4158. 22p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Titanium+powder%22">Titanium powder</searchLink><br /><searchLink fieldCode="DE" term="%22Hard+materials%22">Hard materials</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+alloys%22">Titanium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Alloy+powders%22">Alloy powders</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] The high corrosion resistance, low density, and useful biological activity with heat resistance of titanium alloys have made them the most outstanding choice in various industrial applications. However, their poor tribological properties inhibit utilizing them in applications that need abrasive and adhesive wear resistance. Laser cladding is being applied to increase the capabilities of such alloys by allowing the deposition of different hard coating materials. This paper attempts to study the thermal, microstructure, and clad layer geometry evolution during coaxial laser cladding of Ti6Al4V titanium alloy with tungsten carbide + nickel-based alloy preblended powder. Owing to the difficulty in experimentally measuring the thermal and microstructure evolution due to lots of laser processing parameters, a new three-dimensional numerical model based on finite-difference analysis for studying the entire process has been proposed. The behavior of the different thermophysical properties of WC, NiCrBSiC, and Ti6Al4V materials, as well as the phase transition based on latent heat and fluid dynamics considering materials velocity, viscosity, and buoyancy force, during melting and resolidification processes, were considered to improve and ensure the accuracy of the numerical model. The proposed model could be applied to accurately estimate the temperature history and the deposited clad layer morphology and geometry. The cooling rate and thermal gradient were investigated to predict the solidification rate and microstructure by using different laser cladding parameters. It was confirmed that the laser power has a substantial impact on the peak temperature in the melt-pool, while the laser scanning speed has a significant effect on the heating and cooling rates. In conclusion, the process parameters have to be carefully chosen to certify a good quality clad layer with the preservation of the WC particles. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1016/j.aej.2021.09.014
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        Text: English
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        PageCount: 22
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        Type: general
      – SubjectFull: Hard materials
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      – SubjectFull: Titanium alloys
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      – SubjectFull: Phase transitions
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      – SubjectFull: Microstructure
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      – SubjectFull: Alloy powders
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      – TitleFull: New 3D model for accurate prediction of thermal and microstructure evolution of laser powder cladding of Ti6Al4V alloy.
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            NameFull: Youssef, Doaa
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            NameFull: Hassab-Elnaby, Salah
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            NameFull: Al-Sayed, Samar Reda
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            – D: 01
              M: 05
              Text: May2022
              Type: published
              Y: 2022
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