In situ TEM observation of phase transformation in bulk metallic glass composites

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

  • Huaping Sheng
  • Long Zhang
  • Haifeng Zhang
  • Jianbo Wang
  • Christoph Gammer

Organisationseinheiten

Externe Organisationseinheiten

  • Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
  • Chinesische Akademie der Wissenschaften, Shenyang
  • School of Physics and Technology
  • Wuhan University

Abstract

Transformation-induced plasticity is a fundamental solution for improving the ductility of bulk metallic glass composites (BMGCs). However, the underlying mechanism remains controversial. Here, by using in situ transmission electron microscopy, we present direct observation of the transformation dynamics from β/ω phase to α’ phase of the crystalline dendrites in a TiZrCuBe BMGC under uniaxial tensile deformation. The transformation redistributes the stress in the adjacent matrix, making interfacial regions potential preferential sites for shear band nucleation. The high density of nucleation sites is believed to promote the formation of shear band networks and enhance the ductility of BMGCs.

Details

OriginalspracheEnglisch
Seiten (von - bis)190-195
Seitenumfang6
FachzeitschriftMaterials Research Letters
Jahrgang9.2021
Ausgabenummer4
DOIs
StatusElektronische Veröffentlichung vor Drucklegung. - 17 Jan. 2021