Fatigue behavior and fracture morphology of Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10 bulk-metallic glasses

G. Y. Wang; P. K. Liaw; W. H. Peter; B. Yang; M. Freels; Y. Yokoyama; M. L. Benson; B. A. Green; T. A. Saleh; R. L. McDaniels; R. V. Steward; R. A. Buchanan; C. T. Liu; C. R. Brooks

doi:10.1016/j.intermet.2004.04.038

Fatigue behavior and fracture morphology of Zr₅₀Al ₁₀Cu₄₀ and Zr₅₀Al₁₀Cu ₃₀Ni₁₀ bulk-metallic glasses

G. Y. Wang, P. K. Liaw, W. H. Peter, B. Yang, M. Freels, Y. Yokoyama, M. L. Benson, B. A. Green, T. A. Saleh, R. L. McDaniels, R. V. Steward, R. A. Buchanan, C. T. Liu, C. R. Brooks

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

76 Scopus citations

Abstract

In the present work, high-cycle fatigue (HCF) experiments were conducted on zirconium (Zr)-based bulk-metallic glasses (BMGs): Zr₅₀Al ₁₀Cu₄₀ and Zr₅₀Al₁₀Cu ₃₀Ni₁₀, in atomic percent. The HCF tests were performed, using an electrohydraulic machine at a frequency of 10 Hz with a R ratio of 0.1 and under tension-tension loading. Note that R=σ_min/ σ_max, where σ_min and σ_max are the applied minimum and maximum stresses, respectively. The test environments were air and vacuum. A high-speed and high-sensitivity thermographic-infrared (IR) imaging system was used for the nondestructive evaluation of temperature evolutions during fatigue testing of the BMGs. A sparking phenomenon was observed at the final fracture moment of Zr₅₀Al₁₀Cu ₃₀Ni₁₀ in air, while a bright notch section was observed near the final fracture moment of these two BMGs in vacuum. The effect of the chemical composition on the fatigue behavior of the Zr-based BMGs was studied. The fatigue-endurance limit of Zr₅₀Al₁₀Cu ₃₀Ni₁₀ (865 MPa) was somewhat greater than that of Zr ₅₀Al₁₀Cu₄₀ (752 MPa) in air. The fatigue lives in vacuum and air were generally found to be comparable. The fatigue-fracture surface consisted of four main regions: the fatigue crack-initiation, crack-propagation, final-fast-fracture, and apparent-melting areas. Apparent fracture toughness was determined from the measurement of the crack-propagation region of the fatigue-fractured surface. The fracture-toughness values of Zr₅₀Al₁₀Cu₄₀ were greater than those of Zr ₅₀Al₁₀Cu₃₀Ni₁₀. The vein pattern and droplets with a melted appearance were observed in the apparent melting region. There were microcracks on the outer surface of the specimen, which could be associated with multiple fatigue-crack-initiation sites. These microcracks might result from shear bands and shear-off steps.

Original language	English
Pages (from-to)	1219-1227
Number of pages	9
Journal	Intermetallics
Volume	12
Issue number	10-11 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.intermet.2004.04.038
State	Published - Oct 2004
Externally published	Yes

Funding

We would like to acknowledge the financial support of the National Science Foundation, the Combined Research-Curriculum Development (CRCD) Programs, under EEC-9527527 and EEC-0203415, the Integrative Graduate Education and Research Training (IGERT) Program, under DGE-9987548, and the International Materials Institutes (IMI), under DMR-0231320, to the University of Tennessee, Knoxville, with Ms. M. Poats, Dr. W. Jennings, Dr. L. Goldberg, Dr. C. Huber and Dr. L. Clesceri as contract monitors, respectively. The authors would also like to thank Mr. B.R. Barnard of the University of Tennessee and Dr. K. Liu of the Oak Ridge National Laboratory (ORNL) for their help. The work at ORNL was sponsored by the Division of Materials Science and Engineering, US Department of Energy under Contract DE-AC05-00 OR -22725 with UT-Battelle, LLC.

Keywords

B. Glasses, metallic
B. Mechanical properties at ambient temperature
F. Electron microscopy, scanning
F. Non-destructive evaluation

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10.1016/j.intermet.2004.04.038

Cite this

Wang, G. Y., Liaw, P. K., Peter, W. H., Yang, B., Freels, M., Yokoyama, Y., Benson, M. L., Green, B. A., Saleh, T. A., McDaniels, R. L., Steward, R. V., Buchanan, R. A., Liu, C. T., & Brooks, C. R. (2004). Fatigue behavior and fracture morphology of Zr₅₀Al ₁₀Cu₄₀ and Zr₅₀Al₁₀Cu ₃₀Ni₁₀ bulk-metallic glasses. Intermetallics, 12(10-11 SPEC. ISS.), 1219-1227. https://doi.org/10.1016/j.intermet.2004.04.038

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title = "Fatigue behavior and fracture morphology of Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10 bulk-metallic glasses",

abstract = "In the present work, high-cycle fatigue (HCF) experiments were conducted on zirconium (Zr)-based bulk-metallic glasses (BMGs): Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10, in atomic percent. The HCF tests were performed, using an electrohydraulic machine at a frequency of 10 Hz with a R ratio of 0.1 and under tension-tension loading. Note that R=σmin/ σmax, where σmin and σmax are the applied minimum and maximum stresses, respectively. The test environments were air and vacuum. A high-speed and high-sensitivity thermographic-infrared (IR) imaging system was used for the nondestructive evaluation of temperature evolutions during fatigue testing of the BMGs. A sparking phenomenon was observed at the final fracture moment of Zr50Al10Cu 30Ni10 in air, while a bright notch section was observed near the final fracture moment of these two BMGs in vacuum. The effect of the chemical composition on the fatigue behavior of the Zr-based BMGs was studied. The fatigue-endurance limit of Zr50Al10Cu 30Ni10 (865 MPa) was somewhat greater than that of Zr 50Al10Cu40 (752 MPa) in air. The fatigue lives in vacuum and air were generally found to be comparable. The fatigue-fracture surface consisted of four main regions: the fatigue crack-initiation, crack-propagation, final-fast-fracture, and apparent-melting areas. Apparent fracture toughness was determined from the measurement of the crack-propagation region of the fatigue-fractured surface. The fracture-toughness values of Zr50Al10Cu40 were greater than those of Zr 50Al10Cu30Ni10. The vein pattern and droplets with a melted appearance were observed in the apparent melting region. There were microcracks on the outer surface of the specimen, which could be associated with multiple fatigue-crack-initiation sites. These microcracks might result from shear bands and shear-off steps.",

keywords = "B. Glasses, metallic, B. Mechanical properties at ambient temperature, F. Electron microscopy, scanning, F. Non-destructive evaluation",

author = "Wang, {G. Y.} and Liaw, {P. K.} and Peter, {W. H.} and B. Yang and M. Freels and Y. Yokoyama and Benson, {M. L.} and Green, {B. A.} and Saleh, {T. A.} and McDaniels, {R. L.} and Steward, {R. V.} and Buchanan, {R. A.} and Liu, {C. T.} and Brooks, {C. R.}",

year = "2004",

month = oct,

doi = "10.1016/j.intermet.2004.04.038",

language = "English",

volume = "12",

pages = "1219--1227",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier",

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Wang, GY, Liaw, PK, Peter, WH, Yang, B, Freels, M, Yokoyama, Y, Benson, ML, Green, BA, Saleh, TA, McDaniels, RL, Steward, RV, Buchanan, RA, Liu, CT & Brooks, CR 2004, 'Fatigue behavior and fracture morphology of Zr₅₀Al ₁₀Cu₄₀ and Zr₅₀Al₁₀Cu ₃₀Ni₁₀ bulk-metallic glasses', Intermetallics, vol. 12, no. 10-11 SPEC. ISS., pp. 1219-1227. https://doi.org/10.1016/j.intermet.2004.04.038

TY - JOUR

T1 - Fatigue behavior and fracture morphology of Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10 bulk-metallic glasses

AU - Wang, G. Y.

AU - Liaw, P. K.

AU - Peter, W. H.

AU - Yang, B.

AU - Freels, M.

AU - Yokoyama, Y.

AU - Benson, M. L.

AU - Green, B. A.

AU - Saleh, T. A.

AU - McDaniels, R. L.

AU - Steward, R. V.

AU - Buchanan, R. A.

AU - Liu, C. T.

AU - Brooks, C. R.

PY - 2004/10

Y1 - 2004/10

N2 - In the present work, high-cycle fatigue (HCF) experiments were conducted on zirconium (Zr)-based bulk-metallic glasses (BMGs): Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10, in atomic percent. The HCF tests were performed, using an electrohydraulic machine at a frequency of 10 Hz with a R ratio of 0.1 and under tension-tension loading. Note that R=σmin/ σmax, where σmin and σmax are the applied minimum and maximum stresses, respectively. The test environments were air and vacuum. A high-speed and high-sensitivity thermographic-infrared (IR) imaging system was used for the nondestructive evaluation of temperature evolutions during fatigue testing of the BMGs. A sparking phenomenon was observed at the final fracture moment of Zr50Al10Cu 30Ni10 in air, while a bright notch section was observed near the final fracture moment of these two BMGs in vacuum. The effect of the chemical composition on the fatigue behavior of the Zr-based BMGs was studied. The fatigue-endurance limit of Zr50Al10Cu 30Ni10 (865 MPa) was somewhat greater than that of Zr 50Al10Cu40 (752 MPa) in air. The fatigue lives in vacuum and air were generally found to be comparable. The fatigue-fracture surface consisted of four main regions: the fatigue crack-initiation, crack-propagation, final-fast-fracture, and apparent-melting areas. Apparent fracture toughness was determined from the measurement of the crack-propagation region of the fatigue-fractured surface. The fracture-toughness values of Zr50Al10Cu40 were greater than those of Zr 50Al10Cu30Ni10. The vein pattern and droplets with a melted appearance were observed in the apparent melting region. There were microcracks on the outer surface of the specimen, which could be associated with multiple fatigue-crack-initiation sites. These microcracks might result from shear bands and shear-off steps.

AB - In the present work, high-cycle fatigue (HCF) experiments were conducted on zirconium (Zr)-based bulk-metallic glasses (BMGs): Zr50Al 10Cu40 and Zr50Al10Cu 30Ni10, in atomic percent. The HCF tests were performed, using an electrohydraulic machine at a frequency of 10 Hz with a R ratio of 0.1 and under tension-tension loading. Note that R=σmin/ σmax, where σmin and σmax are the applied minimum and maximum stresses, respectively. The test environments were air and vacuum. A high-speed and high-sensitivity thermographic-infrared (IR) imaging system was used for the nondestructive evaluation of temperature evolutions during fatigue testing of the BMGs. A sparking phenomenon was observed at the final fracture moment of Zr50Al10Cu 30Ni10 in air, while a bright notch section was observed near the final fracture moment of these two BMGs in vacuum. The effect of the chemical composition on the fatigue behavior of the Zr-based BMGs was studied. The fatigue-endurance limit of Zr50Al10Cu 30Ni10 (865 MPa) was somewhat greater than that of Zr 50Al10Cu40 (752 MPa) in air. The fatigue lives in vacuum and air were generally found to be comparable. The fatigue-fracture surface consisted of four main regions: the fatigue crack-initiation, crack-propagation, final-fast-fracture, and apparent-melting areas. Apparent fracture toughness was determined from the measurement of the crack-propagation region of the fatigue-fractured surface. The fracture-toughness values of Zr50Al10Cu40 were greater than those of Zr 50Al10Cu30Ni10. The vein pattern and droplets with a melted appearance were observed in the apparent melting region. There were microcracks on the outer surface of the specimen, which could be associated with multiple fatigue-crack-initiation sites. These microcracks might result from shear bands and shear-off steps.

KW - B. Glasses, metallic

KW - B. Mechanical properties at ambient temperature

KW - F. Electron microscopy, scanning

KW - F. Non-destructive evaluation

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DO - 10.1016/j.intermet.2004.04.038

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