Notch toughness of Fe-based bulk metallic glass and composites

S. F. Guo; Kang Cheung Chan; L. Liu

doi:10.1016/j.jallcom.2011.07.016

Notch toughness of Fe-based bulk metallic glass and composites

S. F. Guo, Kang Cheung Chan, L. Liu

Research output: Journal article publication › Journal article › Academic research › peer-review

23 Citations (Scopus)

Abstract

The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.

Original language	English
Pages (from-to)	9441-9446
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	39
DOIs	https://doi.org/10.1016/j.jallcom.2011.07.016
Publication status	Published - 29 Sept 2011

Keywords

Amorphous materials
Mechanical properties
Microstructure
Quenching
Rapid-solidification

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2011.07.016

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title = "Notch toughness of Fe-based bulk metallic glass and composites",

abstract = "The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.",

keywords = "Amorphous materials, Mechanical properties, Microstructure, Quenching, Rapid-solidification",

author = "Guo, {S. F.} and Chan, {Kang Cheung} and L. Liu",

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doi = "10.1016/j.jallcom.2011.07.016",

language = "English",

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T1 - Notch toughness of Fe-based bulk metallic glass and composites

AU - Guo, S. F.

AU - Chan, Kang Cheung

AU - Liu, L.

PY - 2011/9/29

Y1 - 2011/9/29

N2 - The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.

AB - The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.

KW - Amorphous materials

KW - Mechanical properties

KW - Microstructure

KW - Quenching

KW - Rapid-solidification

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U2 - 10.1016/j.jallcom.2011.07.016

DO - 10.1016/j.jallcom.2011.07.016

M3 - Journal article

SN - 0925-8388

VL - 509

SP - 9441

EP - 9446

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 39

ER -

Notch toughness of Fe-based bulk metallic glass and composites

Abstract

Keywords

ASJC Scopus subject areas

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