View in EDS

The Influence of L-PBF Process Parameters with Platform Preheating on the Structure and Properties of Orthorhombic Titanium Aluminide Ti2AlNb Alloy.

Saved in:
Bibliographic Details
Title: The Influence of L-PBF Process Parameters with Platform Preheating on the Structure and Properties of Orthorhombic Titanium Aluminide Ti2AlNb Alloy.
Authors: Demakov, S. L.1 (AUTHOR), Illarionov, A. G.1 (AUTHOR), Stepanov, S. I.1 (AUTHOR), Grachev, D. V.2 (AUTHOR), Shabanov, M. A.1 (AUTHOR) m.a.shabanov@urfu.ru, Popov, A. A.1 (AUTHOR), Praveenkumar, K.3,4 (AUTHOR), Prasanth, S.3 (AUTHOR), Suwas, Satyam3 (AUTHOR)
Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Dec2025, Vol. 77 Issue 12, p9760-9772. 13p.
Subjects: Titanium aluminides, Microstructure, Mechanical behavior of materials, Selective laser melting, Three-dimensional printing
Abstract: The additive manufacturing of hard-to-process intermetallics, such as the Ti-23Al-25Nb alloy (O-alloy), poses significant challenges but is critical for expanding their industrial applications. This study identifies the optimum laser powder bed fusion (L-PBF) parameters, build platform temperature, and aging treatment required to produce high-performance, crack-free O-alloy for demanding applications. The effect of L-PBF process parameters, including platform preheat temperature and subsequent aging treatment on the relative density, defects, microstructure, phase composition, and mechanical properties of orthorhombic titanium aluminide, Ti2AlNb, is investigated. Build platform preheating at 600°C and high volumetric energy density (VED) in the range of 37–139 J/mm3 results in a keyhole porosity and cracking due to excessive energy input. Increasing the substrate temperature to 700°C, under optimized process parameters with VED in the range of 22–37 J/mm3, produces a crack-free build with a relative density of 99.7%. A reduction in laser scanning speed increases the fraction of the O-phase, thereby enhancing the high-temperature strength. In addition, post-aging treatment at 800°C for 30 min improved the strength and ductility of the O-alloy at room and elevated testing temperatures of 600 and 700°C. The effect of microstructure on the mechanical properties of the O-alloy is discussed. [ABSTRACT FROM AUTHOR]
Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 189593440
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: The Influence of L-PBF Process Parameters with Platform Preheating on the Structure and Properties of Orthorhombic Titanium Aluminide Ti2AlNb Alloy.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Demakov%2C+S%2E+L%2E%22">Demakov, S. L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Illarionov%2C+A%2E+G%2E%22">Illarionov, A. G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stepanov%2C+S%2E+I%2E%22">Stepanov, S. I.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Grachev%2C+D%2E+V%2E%22">Grachev, D. V.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shabanov%2C+M%2E+A%2E%22">Shabanov, M. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> m.a.shabanov@urfu.ru</i><br /><searchLink fieldCode="AR" term="%22Popov%2C+A%2E+A%2E%22">Popov, A. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Praveenkumar%2C+K%2E%22">Praveenkumar, K.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Prasanth%2C+S%2E%22">Prasanth, S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suwas%2C+Satyam%22">Suwas, Satyam</searchLink><relatesTo>3</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22JOM%3A+The+Journal+of+The+Minerals%2C+Metals+%26+Materials+Society+%28TMS%29%22">JOM: The Journal of The Minerals, Metals & Materials Society (TMS)</searchLink>. Dec2025, Vol. 77 Issue 12, p9760-9772. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Titanium+aluminides%22">Titanium aluminides</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Selective+laser+melting%22">Selective laser melting</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+printing%22">Three-dimensional printing</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The additive manufacturing of hard-to-process intermetallics, such as the Ti-23Al-25Nb alloy (O-alloy), poses significant challenges but is critical for expanding their industrial applications. This study identifies the optimum laser powder bed fusion (L-PBF) parameters, build platform temperature, and aging treatment required to produce high-performance, crack-free O-alloy for demanding applications. The effect of L-PBF process parameters, including platform preheat temperature and subsequent aging treatment on the relative density, defects, microstructure, phase composition, and mechanical properties of orthorhombic titanium aluminide, Ti2AlNb, is investigated. Build platform preheating at 600°C and high volumetric energy density (VED) in the range of 37–139 J/mm3 results in a keyhole porosity and cracking due to excessive energy input. Increasing the substrate temperature to 700°C, under optimized process parameters with VED in the range of 22–37 J/mm3, produces a crack-free build with a relative density of 99.7%. A reduction in laser scanning speed increases the fraction of the O-phase, thereby enhancing the high-temperature strength. In addition, post-aging treatment at 800°C for 30 min improved the strength and ductility of the O-alloy at room and elevated testing temperatures of 600 and 700°C. The effect of microstructure on the mechanical properties of the O-alloy is discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=189593440
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s11837-025-07840-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 9760
    Subjects:
      – SubjectFull: Titanium aluminides
        Type: general
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Selective laser melting
        Type: general
      – SubjectFull: Three-dimensional printing
        Type: general
    Titles:
      – TitleFull: The Influence of L-PBF Process Parameters with Platform Preheating on the Structure and Properties of Orthorhombic Titanium Aluminide Ti2AlNb Alloy.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Demakov, S. L.
      – PersonEntity:
          Name:
            NameFull: Illarionov, A. G.
      – PersonEntity:
          Name:
            NameFull: Stepanov, S. I.
      – PersonEntity:
          Name:
            NameFull: Grachev, D. V.
      – PersonEntity:
          Name:
            NameFull: Shabanov, M. A.
      – PersonEntity:
          Name:
            NameFull: Popov, A. A.
      – PersonEntity:
          Name:
            NameFull: Praveenkumar, K.
      – PersonEntity:
          Name:
            NameFull: Prasanth, S.
      – PersonEntity:
          Name:
            NameFull: Suwas, Satyam
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 10474838
          Numbering:
            – Type: volume
              Value: 77
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: JOM: The Journal of The Minerals, Metals & Materials Society (TMS)
              Type: main
ResultId 1