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Dynamic evolution analysis on molten pool: LMD experiment and simulation.

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Title: Dynamic evolution analysis on molten pool: LMD experiment and simulation.
Authors: Xiao, Xia1 (AUTHOR) xiaoxia@tiangong.edu.cn, Pan, Hongli2 (AUTHOR), Ruan, Jiangtao1 (AUTHOR), Wang, Chen2 (AUTHOR)
Source: Materials & Manufacturing Processes. 2025, Vol. 40 Issue 6, p806-814. 9p.
Subjects: Transition flow, Numerical analysis, Heat transfer, Solidification, Microstructure, Mass transfer
Abstract: Laser melting deposition is an advanced additive manufacturing technology, wherein molten pool as the fundamental building block endures melting and solidification with complex heat and mass transfer, thereby significantly affecting microstructures of the formed parts. Through deposition experiments and numerical simulations, dynamic evolution of molten pool is investigated from initial molten status to final stable deposition, and microstructures generated there are illustrated by experimental morphological assessment and predicted based on numerical analysis of temperature gradient and solidification rate. Results show that molten pool presents the lengthy elliptical form, and temperature field appears elliptical with a trail at the rear portion, and temperature gradient perpendicular to the scanning direction is relatively higher. Marangoni vortices emerge at the onset of the flow field and subsequently transition into lateral flow and longitudinal vortex. Microstructures grow from planar grains and epitaxial columnar grains to equiaxed grains from bottom to top of molten pool. [ABSTRACT FROM AUTHOR]
Copyright of Materials & Manufacturing Processes is the property of Taylor & Francis Ltd 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.)
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  Data: Dynamic evolution analysis on molten pool: LMD experiment and simulation.
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  Data: <searchLink fieldCode="AR" term="%22Xiao%2C+Xia%22">Xiao, Xia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xiaoxia@tiangong.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Pan%2C+Hongli%22">Pan, Hongli</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ruan%2C+Jiangtao%22">Ruan, Jiangtao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Chen%22">Wang, Chen</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%26+Manufacturing+Processes%22">Materials & Manufacturing Processes</searchLink>. 2025, Vol. 40 Issue 6, p806-814. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Transition+flow%22">Transition flow</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Solidification%22">Solidification</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Laser melting deposition is an advanced additive manufacturing technology, wherein molten pool as the fundamental building block endures melting and solidification with complex heat and mass transfer, thereby significantly affecting microstructures of the formed parts. Through deposition experiments and numerical simulations, dynamic evolution of molten pool is investigated from initial molten status to final stable deposition, and microstructures generated there are illustrated by experimental morphological assessment and predicted based on numerical analysis of temperature gradient and solidification rate. Results show that molten pool presents the lengthy elliptical form, and temperature field appears elliptical with a trail at the rear portion, and temperature gradient perpendicular to the scanning direction is relatively higher. Marangoni vortices emerge at the onset of the flow field and subsequently transition into lateral flow and longitudinal vortex. Microstructures grow from planar grains and epitaxial columnar grains to equiaxed grains from bottom to top of molten pool. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials & Manufacturing Processes is the property of Taylor & Francis Ltd 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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      – Type: doi
        Value: 10.1080/10426914.2025.2469552
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 806
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      – SubjectFull: Transition flow
        Type: general
      – SubjectFull: Numerical analysis
        Type: general
      – SubjectFull: Heat transfer
        Type: general
      – SubjectFull: Solidification
        Type: general
      – SubjectFull: Microstructure
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      – SubjectFull: Mass transfer
        Type: general
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      – TitleFull: Dynamic evolution analysis on molten pool: LMD experiment and simulation.
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            NameFull: Pan, Hongli
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            NameFull: Ruan, Jiangtao
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            NameFull: Wang, Chen
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          Dates:
            – D: 01
              M: 05
              Text: 2025
              Type: published
              Y: 2025
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            – TitleFull: Materials & Manufacturing Processes
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