View in EDS

High strain rate persistence of the strength anomaly in the L12 intermetallic compound Ni3Si evidenced by nanoindentation testing.

Saved in:
Bibliographic Details
Title: High strain rate persistence of the strength anomaly in the L12 intermetallic compound Ni3Si evidenced by nanoindentation testing.
Authors: Merle, Benoit1 (AUTHOR) benoit.merle@uni-kassel.de, Walker, Christopher C.2 (AUTHOR), Zenk, Christopher H.3 (AUTHOR), Pharr, George M.2 (AUTHOR)
Source: Acta Materialia. Jan2025, Vol. 284, pN.PAG-N.PAG. 1p.
Subjects: Strain rate, Intermetallic compounds, Jet engines, Nanoindentation tests, High temperatures
Abstract: L1 2 intermetallic compounds are essential constituents of the nickel-based superalloys widely used in jet engines. They derive their exceptional high-temperature mechanical properties from the yield strength anomaly mechanism. Despite potential safety implications for collisions, e.g. bird strikes, conclusive evidence of its persistence at high strain rates has remained elusive. This is mostly due to experimental limitations, which are overcome here by combining high strain rate and high temperature testing within a single nanoindentation testing system to investigate the evolution of the strength anomaly in the L1 2 single-phase Ni 3 Si for strain rates between 0.1 and 100 s−1. High strain rates are found to extend the anomalous behavior toward higher temperatures, while the onset and peak temperatures of the strength anomaly remain largely insensitive to the applied strain rate. These experimental findings validate basic assumptions from the Paidar–Pope–Vitek (PPV) theory of its origin. In addition, high strain rates are found to increase the peak anomalous hardness, owing to the overall positive strain rate sensitivity of the L1 2 compound. [Display omitted] [ABSTRACT FROM AUTHOR]
Copyright of Acta Materialia 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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 181810484
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: High strain rate persistence of the strength anomaly in the L12 intermetallic compound Ni3Si evidenced by nanoindentation testing.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Merle%2C+Benoit%22">Merle, Benoit</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> benoit.merle@uni-kassel.de</i><br /><searchLink fieldCode="AR" term="%22Walker%2C+Christopher+C%2E%22">Walker, Christopher C.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zenk%2C+Christopher+H%2E%22">Zenk, Christopher H.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pharr%2C+George+M%2E%22">Pharr, George M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Acta+Materialia%22">Acta Materialia</searchLink>. Jan2025, Vol. 284, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Strain+rate%22">Strain rate</searchLink><br /><searchLink fieldCode="DE" term="%22Intermetallic+compounds%22">Intermetallic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Jet+engines%22">Jet engines</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoindentation+tests%22">Nanoindentation tests</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: L1 2 intermetallic compounds are essential constituents of the nickel-based superalloys widely used in jet engines. They derive their exceptional high-temperature mechanical properties from the yield strength anomaly mechanism. Despite potential safety implications for collisions, e.g. bird strikes, conclusive evidence of its persistence at high strain rates has remained elusive. This is mostly due to experimental limitations, which are overcome here by combining high strain rate and high temperature testing within a single nanoindentation testing system to investigate the evolution of the strength anomaly in the L1 2 single-phase Ni 3 Si for strain rates between 0.1 and 100 s−1. High strain rates are found to extend the anomalous behavior toward higher temperatures, while the onset and peak temperatures of the strength anomaly remain largely insensitive to the applied strain rate. These experimental findings validate basic assumptions from the Paidar–Pope–Vitek (PPV) theory of its origin. In addition, high strain rates are found to increase the peak anomalous hardness, owing to the overall positive strain rate sensitivity of the L1 2 compound. [Display omitted] [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Acta Materialia 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=181810484
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.actamat.2024.120598
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Strain rate
        Type: general
      – SubjectFull: Intermetallic compounds
        Type: general
      – SubjectFull: Jet engines
        Type: general
      – SubjectFull: Nanoindentation tests
        Type: general
      – SubjectFull: High temperatures
        Type: general
    Titles:
      – TitleFull: High strain rate persistence of the strength anomaly in the L12 intermetallic compound Ni3Si evidenced by nanoindentation testing.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Merle, Benoit
      – PersonEntity:
          Name:
            NameFull: Walker, Christopher C.
      – PersonEntity:
          Name:
            NameFull: Zenk, Christopher H.
      – PersonEntity:
          Name:
            NameFull: Pharr, George M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 20
              M: 01
              Text: Jan2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 13596454
          Numbering:
            – Type: volume
              Value: 284
          Titles:
            – TitleFull: Acta Materialia
              Type: main
ResultId 1