Fracture toughness study of new Zr-based Be-bearing bulk metallic glasses

C. Paul Kim, Jin Yoo Suh, Aaron Wiest, Marylaura Thomas, R. Dale Conner, William L. Johnson

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Three new compositional variants of the Zr-Ti-Be-LTM (late transition metal) family of metallic glasses are discussed. Thermal stability, ΔT = Tx-Tg, was increased from 82 °C for Zr41.2Ti13.8Cu12.5Ni10Be 22.5 (Viterloy 1) to 141 °C for Zr44Ti11Cu20Be25. It is found that fracture toughness is the most distinguishing parameter characterizing the alloys in contrast to other mechanical properties. Quaternary alloys consistently had fracture toughness values exceeding 80 MPa m1/2, while for Vitreloy 1 KQ = 48.5 MPa m1/2 with a large amount of scatter. Adding iron reduced the fracture toughness to 25 MPa m1/2.

Original languageEnglish (US)
Pages (from-to)80-83
Number of pages4
JournalScripta Materialia
Volume60
Issue number2
DOIs
StatePublished - Jan 2009
Externally publishedYes

Fingerprint

Bearings (structural)
Metallic glass
metallic glasses
fracture strength
Fracture toughness
quaternary alloys
Transition metals
Thermodynamic stability
thermal stability
Iron
transition metals
mechanical properties
iron
Mechanical properties

Keywords

  • Bulk amorphous materials
  • Fracture
  • Metallic glasses
  • Toughness

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Fracture toughness study of new Zr-based Be-bearing bulk metallic glasses. / Kim, C. Paul; Suh, Jin Yoo; Wiest, Aaron; Thomas, Marylaura; Conner, R. Dale; Johnson, William L.

In: Scripta Materialia, Vol. 60, No. 2, 01.2009, p. 80-83.

Research output: Contribution to journalArticle

Kim, C. Paul ; Suh, Jin Yoo ; Wiest, Aaron ; Thomas, Marylaura ; Conner, R. Dale ; Johnson, William L. / Fracture toughness study of new Zr-based Be-bearing bulk metallic glasses. In: Scripta Materialia. 2009 ; Vol. 60, No. 2. pp. 80-83.
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