Cristin-resultat-ID: 2021117
Sist endret: 24. august 2022, 14:08
NVI-rapporteringsår: 2022
Resultat
Vitenskapelig artikkel
2022

Nanoscale creep behavior and its size dependency of a Zr-based bulk metallic glass manufactured by selective laser melting

Bidragsytere:
  • Siqi Liu
  • Zexin Chang
  • Yuequn Fu
  • yuyu liu
  • Meichao Lin
  • Xiaobo Ren
  • mfl.

Tidsskrift

Materials & design
ISSN 0264-1275
e-ISSN 1873-4197
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2022
Volum: 218
Artikkelnummer: 110723
Open Access

Importkilder

Scopus-ID: 2-s2.0-85130361758

Beskrivelse Beskrivelse

Tittel

Nanoscale creep behavior and its size dependency of a Zr-based bulk metallic glass manufactured by selective laser melting

Sammendrag

Nanoscale creep behaviors of metallic glasses (MGs) have gathered considerable interests in recent years, owing to their distinct atomistic mechanisms of plasticity. Additive manufacturing (AM) is a burgeoning technique for manufacturing MGs, the nanoscale creep characteristics and creep mechanism of the AM-ed MGs, however, remain ambiguous. In this work, the nanoscale creep behavior and creep size effect of a selective laser melted (SLM-ed) Zr-based MG were investigated by using nanoindentation. In an effort to gain more insight into the creep behaviors, the creep compliance and creep retardation spectra were extracted. The creep stress exponent (n) and shear transformation zone (STZ) volume, as the indicators of the creep mechanism, were estimated. The values of n are in the range of 2-3, and STZ volumes are around 2 nm3. The creep resistance of the MG was found to decrease with the increasing applied peak loads. A potential mechanism for this creep size effect was revealed: the smaller of the STZ volume, as well as the greater ratio of plastic flow under the higher maximum load, are responsible for the decreasing tendency of creep resistance. This research gives a comprehensive understanding of the atomistic mechanisms in the AM-ed MG during the nanoscale creep deformation process and can serve as a reference for improving the plasticity and further engineering applications.

Bidragsytere

Siqi Liu

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet

Zexin Chang

  • Tilknyttet:
    Forfatter
    ved Taiyuan University of Technology

Yuequn Fu

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet

yuyu liu

  • Tilknyttet:
    Forfatter
    ved China University of Mining and Technology

Meichao Lin

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet
1 - 5 av 9 | Neste | Siste »