A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys
We conducted systematically tensile tests with a series of Nb-based equiatomic alloys with single-phase, body-centered-cubic (bcc) structure. By subtracting all possible strengthening contributions, the intrinsic strength (or lattice friction stress) of each alloy was extracted. It was found that la...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-08-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2019.1610105 |
| _version_ | 1828523889143054336 |
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| author | Y. Y. Zhao Z. F. Lei Z. P. Lu J. C. Huang T. G. Nieh |
| author_facet | Y. Y. Zhao Z. F. Lei Z. P. Lu J. C. Huang T. G. Nieh |
| author_sort | Y. Y. Zhao |
| collection | DOAJ |
| description | We conducted systematically tensile tests with a series of Nb-based equiatomic alloys with single-phase, body-centered-cubic (bcc) structure. By subtracting all possible strengthening contributions, the intrinsic strength (or lattice friction stress) of each alloy was extracted. It was found that lattice friction stress scaled linearly with the lattice distortion in these Nb-based alloys. A simple model was developed to interpret this result. Strengthening effects of lattice distortion and dislocation core width between bcc Nb-based and face-centered-cubic (fcc) Ni-based equiatomic alloys were also compared. It was demonstrated that the enhanced strength in high-entropy alloys was attributable to the lattice distortion. |
| first_indexed | 2024-12-11T20:36:05Z |
| format | Article |
| id | doaj.art-d283c31bed37400fb373a0bcac4eccc7 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-11T20:36:05Z |
| publishDate | 2019-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-d283c31bed37400fb373a0bcac4eccc72022-12-22T00:51:40ZengTaylor & Francis GroupMaterials Research Letters2166-38312019-08-017834034610.1080/21663831.2019.16101051610105A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloysY. Y. Zhao0Z. F. Lei1Z. P. Lu2J. C. Huang3T. G. Nieh4University of TennesseeUniversity of Science and Technology BeijingUniversity of Science and Technology BeijingHong Kong Institute for Advanced Study, City University of Hong KongUniversity of TennesseeWe conducted systematically tensile tests with a series of Nb-based equiatomic alloys with single-phase, body-centered-cubic (bcc) structure. By subtracting all possible strengthening contributions, the intrinsic strength (or lattice friction stress) of each alloy was extracted. It was found that lattice friction stress scaled linearly with the lattice distortion in these Nb-based alloys. A simple model was developed to interpret this result. Strengthening effects of lattice distortion and dislocation core width between bcc Nb-based and face-centered-cubic (fcc) Ni-based equiatomic alloys were also compared. It was demonstrated that the enhanced strength in high-entropy alloys was attributable to the lattice distortion.http://dx.doi.org/10.1080/21663831.2019.1610105High-entropy alloyPeierls stresslattice distortionlattice friction stress |
| spellingShingle | Y. Y. Zhao Z. F. Lei Z. P. Lu J. C. Huang T. G. Nieh A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys Materials Research Letters High-entropy alloy Peierls stress lattice distortion lattice friction stress |
| title | A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys |
| title_full | A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys |
| title_fullStr | A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys |
| title_full_unstemmed | A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys |
| title_short | A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys |
| title_sort | simplified model connecting lattice distortion with friction stress of nb based equiatomic high entropy alloys |
| topic | High-entropy alloy Peierls stress lattice distortion lattice friction stress |
| url | http://dx.doi.org/10.1080/21663831.2019.1610105 |
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