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

C. Paul Kim; Jin Yoo Suh; Aaron Wiest; Mary Laura Lind; R. Dale Conner; William L. Johnson

doi:10.1016/j.scriptamat.2008.09.001

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

C. Paul Kim, Jin Yoo Suh, Aaron Wiest, Mary Laura Lind, R. Dale Conner, William L. Johnson

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Three new compositional variants of the Zr-Ti-Be-LTM (late transition metal) family of metallic glasses are discussed. Thermal stability, ΔT = T_x-T_g, was increased from 82 °C for Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be _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 m^1/2, while for Vitreloy 1 K_Q = 48.5 MPa m^1/2 with a large amount of scatter. Adding iron reduced the fracture toughness to 25 MPa m^1/2.

Original language	English (US)
Pages (from-to)	80-83
Number of pages	4
Journal	Scripta Materialia
Volume	60
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2008.09.001
State	Published - Jan 2009
Externally published	Yes

Keywords

Bulk amorphous materials
Fracture
Metallic glasses
Toughness

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2008.09.001

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title = "Fracture toughness study of new Zr-based Be-bearing bulk metallic glasses",

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.",

keywords = "Bulk amorphous materials, Fracture, Metallic glasses, Toughness",

author = "Kim, {C. Paul} and Suh, {Jin Yoo} and Aaron Wiest and Lind, {Mary Laura} and Conner, {R. Dale} and Johnson, {William L.}",

note = "Funding Information: The authors thank Prof. G. Ravichandran of GALCIT, Caltech for providing the MTS test system. This work was supported in part by the MRSEC Program of the National Science Foundation under Award No. DMR-0520565.",

year = "2009",

month = jan,

doi = "10.1016/j.scriptamat.2008.09.001",

language = "English (US)",

volume = "60",

pages = "80--83",

journal = "Scripta Materialia",

issn = "1359-6462",

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TY - JOUR

T1 - Fracture toughness study of new Zr-based Be-bearing bulk metallic glasses

AU - Kim, C. Paul

AU - Suh, Jin Yoo

AU - Wiest, Aaron

AU - Lind, Mary Laura

AU - Conner, R. Dale

AU - Johnson, William L.

N1 - Funding Information: The authors thank Prof. G. Ravichandran of GALCIT, Caltech for providing the MTS test system. This work was supported in part by the MRSEC Program of the National Science Foundation under Award No. DMR-0520565.

PY - 2009/1

Y1 - 2009/1

N2 - 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.

AB - 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.

KW - Bulk amorphous materials

KW - Fracture

KW - Metallic glasses

KW - Toughness

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

Abstract

Keywords

ASJC Scopus subject areas

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