Controlling the distribution of structural heterogeneities in severely deformed metallic glass

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Controlling the distribution of structural heterogeneities in severely deformed metallic glass. / Bian, X. L.; Zhao, D.; Kim, J. T. et al.
In: Materials Science and Engineering A, Vol. 752.2019, No. 3 April, 02.03.2019, p. 36-42.

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

Harvard

Bian, XL, Zhao, D, Kim, JT, Sopu, D, Wang, G, Pippan, R & Eckert, J 2019, 'Controlling the distribution of structural heterogeneities in severely deformed metallic glass', Materials Science and Engineering A, vol. 752.2019, no. 3 April, pp. 36-42. https://doi.org/10.1016/j.msea.2019.02.092

APA

Bian, X. L., Zhao, D., Kim, J. T., Sopu, D., Wang, G., Pippan, R., & Eckert, J. (2019). Controlling the distribution of structural heterogeneities in severely deformed metallic glass. Materials Science and Engineering A, 752.2019(3 April), 36-42. https://doi.org/10.1016/j.msea.2019.02.092

Vancouver

Bian XL, Zhao D, Kim JT, Sopu D, Wang G, Pippan R et al. Controlling the distribution of structural heterogeneities in severely deformed metallic glass. Materials Science and Engineering A. 2019 Mar 2;752.2019(3 April):36-42. doi: 10.1016/j.msea.2019.02.092

Author

Bian, X. L. ; Zhao, D. ; Kim, J. T. et al. / Controlling the distribution of structural heterogeneities in severely deformed metallic glass. In: Materials Science and Engineering A. 2019 ; Vol. 752.2019, No. 3 April. pp. 36-42.

Bibtex - Download

@article{2139d302923a455190950a3cc020eb67,
title = "Controlling the distribution of structural heterogeneities in severely deformed metallic glass",
abstract = "To uncover the physical correlation between intrinsic structural heterogeneity and mechanical properties of metallic glasses, we performed high-pressure torsion (HPT) to tailor their microstructure with a rejuvenated state. Nanoindentation results show that the change of mechanical properties results from the convolution of the intrinsic thermal activation process and the structural inhomogeneity in the glassy phase. The spatial heterogeneity induced by severe plastic deformation can markedly operate to reduce the energy barrier for shear transformation zone (STZ) activation and increase the number of STZ events during tensile testing to accommodate the plastic strain, leading to a brittle-to-ductile transition. We highlight that by properly controlling the distribution of structural heterogeneities, one can purposely tune the mechanical performance of metallic glasses.",
author = "Bian, {X. L.} and D. Zhao and Kim, {J. T.} and Daniel Sopu and Gang Wang and Reinhard Pippan and J{\"u}rgen Eckert",
year = "2019",
month = mar,
day = "2",
doi = "10.1016/j.msea.2019.02.092",
language = "English",
volume = "752.2019",
pages = "36--42",
journal = "Materials Science and Engineering A",
issn = "0921-5093",
publisher = "Elsevier",
number = "3 April",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Controlling the distribution of structural heterogeneities in severely deformed metallic glass

AU - Bian, X. L.

AU - Zhao, D.

AU - Kim, J. T.

AU - Sopu, Daniel

AU - Wang, Gang

AU - Pippan, Reinhard

AU - Eckert, Jürgen

PY - 2019/3/2

Y1 - 2019/3/2

N2 - To uncover the physical correlation between intrinsic structural heterogeneity and mechanical properties of metallic glasses, we performed high-pressure torsion (HPT) to tailor their microstructure with a rejuvenated state. Nanoindentation results show that the change of mechanical properties results from the convolution of the intrinsic thermal activation process and the structural inhomogeneity in the glassy phase. The spatial heterogeneity induced by severe plastic deformation can markedly operate to reduce the energy barrier for shear transformation zone (STZ) activation and increase the number of STZ events during tensile testing to accommodate the plastic strain, leading to a brittle-to-ductile transition. We highlight that by properly controlling the distribution of structural heterogeneities, one can purposely tune the mechanical performance of metallic glasses.

AB - To uncover the physical correlation between intrinsic structural heterogeneity and mechanical properties of metallic glasses, we performed high-pressure torsion (HPT) to tailor their microstructure with a rejuvenated state. Nanoindentation results show that the change of mechanical properties results from the convolution of the intrinsic thermal activation process and the structural inhomogeneity in the glassy phase. The spatial heterogeneity induced by severe plastic deformation can markedly operate to reduce the energy barrier for shear transformation zone (STZ) activation and increase the number of STZ events during tensile testing to accommodate the plastic strain, leading to a brittle-to-ductile transition. We highlight that by properly controlling the distribution of structural heterogeneities, one can purposely tune the mechanical performance of metallic glasses.

UR - http://www.scopus.com/inward/record.url?scp=85062393602&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2019.02.092

DO - 10.1016/j.msea.2019.02.092

M3 - Article

VL - 752.2019

SP - 36

EP - 42

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

SN - 0921-5093

IS - 3 April

ER -

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