Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites
We report a novel plastic deformation mechanism of bulk metallic glass composites (BMGCs) containing metastable β−Ti dendrites. Plastic deformation of the BMGCs beyond the ultimate tensile strength is mediated by cooperative shear events, which comprise a shear band in the glassy matrix and a contin...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/145778 |
| _version_ | 1811691114381443072 |
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| author | Zhang, L. Narayan, R. L. Sun, B. A. Yan, T. Y. Ramamurty, Upadrasta Eckert, J. Zhang, H. F. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhang, L. Narayan, R. L. Sun, B. A. Yan, T. Y. Ramamurty, Upadrasta Eckert, J. Zhang, H. F. |
| author_sort | Zhang, L. |
| collection | NTU |
| description | We report a novel plastic deformation mechanism of bulk metallic glass composites (BMGCs) containing metastable β−Ti dendrites. Plastic deformation of the BMGCs beyond the ultimate tensile strength is mediated by cooperative shear events, which comprise a shear band in the glassy matrix and a continuous ω−Ti band with a thickness of ∼10 nm in the β−Ti dendrite. The cooperative shear leads to serrated shear avalanches. The formation of narrow ω−Ti bands is caused by high local strain rates during the cooperative shear. The cooperative shear mechanism enriches the deformation mechanisms of BMGCs and also deepens the understanding of ω−Ti formation. |
| first_indexed | 2024-10-01T06:14:45Z |
| format | Journal Article |
| id | ntu-10356/145778 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:14:45Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1457782023-03-04T17:24:44Z Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites Zhang, L. Narayan, R. L. Sun, B. A. Yan, T. Y. Ramamurty, Upadrasta Eckert, J. Zhang, H. F. School of Mechanical and Aerospace Engineering Science::Physics Ductility Fracture We report a novel plastic deformation mechanism of bulk metallic glass composites (BMGCs) containing metastable β−Ti dendrites. Plastic deformation of the BMGCs beyond the ultimate tensile strength is mediated by cooperative shear events, which comprise a shear band in the glassy matrix and a continuous ω−Ti band with a thickness of ∼10 nm in the β−Ti dendrite. The cooperative shear leads to serrated shear avalanches. The formation of narrow ω−Ti bands is caused by high local strain rates during the cooperative shear. The cooperative shear mechanism enriches the deformation mechanisms of BMGCs and also deepens the understanding of ω−Ti formation. Published version 2021-01-07T08:56:34Z 2021-01-07T08:56:34Z 2020 Journal Article Zhang, L., Narayan, R. L., Sun, B. A., Yan, T. Y., Ramamurty, U., Eckert, J., & Zhang, H. F. (2020). Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites. Physical Review Letters, 125(5), 055501-. doi:10.1103/physrevlett.125.055501 0031-9007 https://hdl.handle.net/10356/145778 10.1103/PhysRevLett.125.055501 32794839 5 125 en Physical Review Letters © 2020 American Physical Society (APS). All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society (APS). application/pdf |
| spellingShingle | Science::Physics Ductility Fracture Zhang, L. Narayan, R. L. Sun, B. A. Yan, T. Y. Ramamurty, Upadrasta Eckert, J. Zhang, H. F. Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title | Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title_full | Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title_fullStr | Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title_full_unstemmed | Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title_short | Cooperative shear in bulk metallic glass composites containing metastable β-Ti dendrites |
| title_sort | cooperative shear in bulk metallic glass composites containing metastable β ti dendrites |
| topic | Science::Physics Ductility Fracture |
| url | https://hdl.handle.net/10356/145778 |
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