Roles of in-situ forming hard particles in a Zr-based bulk-metallic glass during monotonic and cyclic loading

G. Y. Wang; P. K. Liaw; Y. Yokoyama; L. Huang; T. Zhang; A. Inoue

doi:10.1007/s11661-010-0209-3

Roles of in-situ forming hard particles in a Zr-based bulk-metallic glass during monotonic and cyclic loading

G. Y. Wang, P. K. Liaw, Y. Yokoyama, L. Huang, T. Zhang, A. Inoue

Institute for Materials Research (IMR)

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

Abstract

Zr₆₇Ni₂₀Cu₅Al₈ (in at. pct) is a bulk-metallic glass (BMG) with in-situ forming hard particles. Some crystalline particles can be observed in the polished beam samples under optical microscopy (OM). The hardness measurements show that these crystalline particles are harder than the matrix of Zr₆₇Ni₂₀Cu ₅Al₈. The energy-dispersive spectroscopy (EDS) analyses demonstrate that there is little difference in the compositions between the crystalline particles and the matrix. The Zr₆₇Ni₂₀Cu ₅Al₈ BMG under compressive loading exhibits yield strength of 1580 MPa with an up to 7.7 pct fracture strain. The fatigue behavior of Zr₆₇Ni₂₀Cu₅Al₈is investigated under four-point-bending loading. The fatigue results show that the fatigue limit of Zr₆₇Ni₂₀Cu₅Al₈ is approximately 361 MPa, based on the stress range. It is generally found that the fatigue cracks initiate from the hard particles. The influence of the hard inclusions on the fracture and fatigue behavior of Zr-based BMGs is discussed.

Original language	English
Pages (from-to)	1799-1804
Number of pages	6
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	41
Issue number	7
DOIs	https://doi.org/10.1007/s11661-010-0209-3
Publication status	Published - 2010 Jul

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-010-0209-3

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title = "Roles of in-situ forming hard particles in a Zr-based bulk-metallic glass during monotonic and cyclic loading",

abstract = "Zr67Ni20Cu5Al8 (in at. pct) is a bulk-metallic glass (BMG) with in-situ forming hard particles. Some crystalline particles can be observed in the polished beam samples under optical microscopy (OM). The hardness measurements show that these crystalline particles are harder than the matrix of Zr67Ni20Cu 5Al8. The energy-dispersive spectroscopy (EDS) analyses demonstrate that there is little difference in the compositions between the crystalline particles and the matrix. The Zr67Ni20Cu 5Al8 BMG under compressive loading exhibits yield strength of 1580 MPa with an up to 7.7 pct fracture strain. The fatigue behavior of Zr67Ni20Cu5Al8is investigated under four-point-bending loading. The fatigue results show that the fatigue limit of Zr67Ni20Cu5Al8 is approximately 361 MPa, based on the stress range. It is generally found that the fatigue cracks initiate from the hard particles. The influence of the hard inclusions on the fracture and fatigue behavior of Zr-based BMGs is discussed.",

author = "Wang, {G. Y.} and Liaw, {P. K.} and Y. Yokoyama and L. Huang and T. Zhang and A. Inoue",

note = "Funding Information: We acknowledge the financial support of the National Science Foundation: (1) The Division of the Design, Manufacture, and Industrial Innovation Program, under Grant No. DMI-9724476; (2) The Combined Research-Curriculum Development (CRCD) Programs, under EEC-9527527 and EEC-0203415; (3) The Integrative Graduate Education and Research Training (IGERT) Program, under DGE-9987548; (4) The International Materials Institutes (IMI) Program, under DMR-0231320; and (5) The Major Research Instrumentation (MRI) Program, under DMR-0421219.",

year = "2010",

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doi = "10.1007/s11661-010-0209-3",

language = "English",

volume = "41",

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T1 - Roles of in-situ forming hard particles in a Zr-based bulk-metallic glass during monotonic and cyclic loading

AU - Wang, G. Y.

AU - Liaw, P. K.

AU - Yokoyama, Y.

AU - Huang, L.

AU - Zhang, T.

AU - Inoue, A.

N1 - Funding Information: We acknowledge the financial support of the National Science Foundation: (1) The Division of the Design, Manufacture, and Industrial Innovation Program, under Grant No. DMI-9724476; (2) The Combined Research-Curriculum Development (CRCD) Programs, under EEC-9527527 and EEC-0203415; (3) The Integrative Graduate Education and Research Training (IGERT) Program, under DGE-9987548; (4) The International Materials Institutes (IMI) Program, under DMR-0231320; and (5) The Major Research Instrumentation (MRI) Program, under DMR-0421219.

PY - 2010/7

Y1 - 2010/7

N2 - Zr67Ni20Cu5Al8 (in at. pct) is a bulk-metallic glass (BMG) with in-situ forming hard particles. Some crystalline particles can be observed in the polished beam samples under optical microscopy (OM). The hardness measurements show that these crystalline particles are harder than the matrix of Zr67Ni20Cu 5Al8. The energy-dispersive spectroscopy (EDS) analyses demonstrate that there is little difference in the compositions between the crystalline particles and the matrix. The Zr67Ni20Cu 5Al8 BMG under compressive loading exhibits yield strength of 1580 MPa with an up to 7.7 pct fracture strain. The fatigue behavior of Zr67Ni20Cu5Al8is investigated under four-point-bending loading. The fatigue results show that the fatigue limit of Zr67Ni20Cu5Al8 is approximately 361 MPa, based on the stress range. It is generally found that the fatigue cracks initiate from the hard particles. The influence of the hard inclusions on the fracture and fatigue behavior of Zr-based BMGs is discussed.

AB - Zr67Ni20Cu5Al8 (in at. pct) is a bulk-metallic glass (BMG) with in-situ forming hard particles. Some crystalline particles can be observed in the polished beam samples under optical microscopy (OM). The hardness measurements show that these crystalline particles are harder than the matrix of Zr67Ni20Cu 5Al8. The energy-dispersive spectroscopy (EDS) analyses demonstrate that there is little difference in the compositions between the crystalline particles and the matrix. The Zr67Ni20Cu 5Al8 BMG under compressive loading exhibits yield strength of 1580 MPa with an up to 7.7 pct fracture strain. The fatigue behavior of Zr67Ni20Cu5Al8is investigated under four-point-bending loading. The fatigue results show that the fatigue limit of Zr67Ni20Cu5Al8 is approximately 361 MPa, based on the stress range. It is generally found that the fatigue cracks initiate from the hard particles. The influence of the hard inclusions on the fracture and fatigue behavior of Zr-based BMGs is discussed.

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Roles of in-situ forming hard particles in a Zr-based bulk-metallic glass during monotonic and cyclic loading

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