Nanoindentation creep behavior of Cu–Zr metallic glass films
The size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental resul...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2018-01-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2017.1383946 |
| _version_ | 1828483675631648768 |
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| author | Yaqiang Wang Jinyu Zhang Kai Wu Gang Liu Daniel Kiener Jun Sun |
| author_facet | Yaqiang Wang Jinyu Zhang Kai Wu Gang Liu Daniel Kiener Jun Sun |
| author_sort | Yaqiang Wang |
| collection | DOAJ |
| description | The size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental results manifested an exceptional decrease in hardness and a monotonic increment in SRS (or a monotonic decline in STZ volume) with reducing h. The deformation mechanism could be rationalized in light of more free volume combined with smaller STZs in thinner films, which likely trigger the strain-softening behavior. Moreover, STZs and deformation-induced devitrification promote the homogeneous-like plastic flow. |
| first_indexed | 2024-12-11T08:41:53Z |
| format | Article |
| id | doaj.art-7aa55bb6abb34d6ea9ee07d1798c5263 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-11T08:41:53Z |
| publishDate | 2018-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-7aa55bb6abb34d6ea9ee07d1798c52632022-12-22T01:14:15ZengTaylor & Francis GroupMaterials Research Letters2166-38312018-01-0161222810.1080/21663831.2017.13839461383946Nanoindentation creep behavior of Cu–Zr metallic glass filmsYaqiang Wang0Jinyu Zhang1Kai Wu2Gang Liu3Daniel Kiener4Jun Sun5Xi’an Jiaotong UniversityXi’an Jiaotong UniversityXi’an Jiaotong UniversityXi’an Jiaotong UniversityAustrian Academy of Science, Montanuniversität LeobenXi’an Jiaotong UniversityThe size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental results manifested an exceptional decrease in hardness and a monotonic increment in SRS (or a monotonic decline in STZ volume) with reducing h. The deformation mechanism could be rationalized in light of more free volume combined with smaller STZs in thinner films, which likely trigger the strain-softening behavior. Moreover, STZs and deformation-induced devitrification promote the homogeneous-like plastic flow.http://dx.doi.org/10.1080/21663831.2017.1383946Metallic glass filmsnanoindentationhardnessstrain-rate sensitivity |
| spellingShingle | Yaqiang Wang Jinyu Zhang Kai Wu Gang Liu Daniel Kiener Jun Sun Nanoindentation creep behavior of Cu–Zr metallic glass films Materials Research Letters Metallic glass films nanoindentation hardness strain-rate sensitivity |
| title | Nanoindentation creep behavior of Cu–Zr metallic glass films |
| title_full | Nanoindentation creep behavior of Cu–Zr metallic glass films |
| title_fullStr | Nanoindentation creep behavior of Cu–Zr metallic glass films |
| title_full_unstemmed | Nanoindentation creep behavior of Cu–Zr metallic glass films |
| title_short | Nanoindentation creep behavior of Cu–Zr metallic glass films |
| title_sort | nanoindentation creep behavior of cu zr metallic glass films |
| topic | Metallic glass films nanoindentation hardness strain-rate sensitivity |
| url | http://dx.doi.org/10.1080/21663831.2017.1383946 |
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