دورية أكاديمية
Pressure-induced local structural crossover in a high-entropy metallic glass
| العنوان: | Pressure-induced local structural crossover in a high-entropy metallic glass |
|---|---|
| المؤلفون: | Zhang, Xin, Lou, Hongbo, Zeng, Qiaoshi, Zhang, Fei, Luan, Hengwei, Liang, Tao, Li, Shubin, Chen, Xiehang, Shao, Yang, Yao, Ke-Fu, Zeng, Zhidan |
| المصدر: | Physical review / B 105(22), 224201 (2022). doi:10.1103/PhysRevB.105.224201 |
| بيانات النشر: | Inst. |
| سنة النشر: | 2022 |
| المجموعة: | DESY Publication Database (PUBDB) |
| مصطلحات موضوعية: | info:eu-repo/classification/ddc/530 |
| جغرافية الموضوع: | DE |
| الوصف: | Achieving effective tuning of glass structures between distinct states is intriguing for fundamental studies and applications, but has previously turned out to be challenging in practice. High-entropy metallic glasses (HEMGs), as an emerging type of metallic glasses (MGs) based on the high-entropy effect, are expected to have more disordered and frustrated chemical short-range structure compared with conventional MGs. Therefore, HEMGs may offer possibilities for structure and properties tuning in glasses. In this work, we employ pressure as a tuning parameter and monitor the atomic structural evolution of a senary HEMG, Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7, up to ∼40 GPa using in situ synchrotron x-ray diffraction. Analysis of its structure factor in reciprocal space and reduced pair distribution function in real space both reveal a pressure-induced structural crossover at ∼20 GPa with a dramatic change in short-range order (SRO), while no similar phenomenon is observed in a conventional MG, Cu36Zr64, as a control sample, suggesting the pressure-induced highly tunable SRO in HEMGs originates from the local chemical complexity, namely, the high-entropy effect. These results confirm that enhanced flexibility and tunability of atomic structures could be achieved by introducing the high-entropy effect into MGs. Therefore, configurational entropy could be another dimension for exploring MGs with highly tunable structures and properties for various potential applications. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/issn/2469-9977; info:eu-repo/semantics/altIdentifier/issn/0556-2805; info:eu-repo/semantics/altIdentifier/issn/1550-235X; info:eu-repo/semantics/altIdentifier/issn/1098-0121; info:eu-repo/semantics/altIdentifier/issn/0163-1829; info:eu-repo/semantics/altIdentifier/issn/1095-3795; info:eu-repo/semantics/altIdentifier/issn/2469-9969; info:eu-repo/semantics/altIdentifier/wos/WOS:000823037700004; info:eu-repo/semantics/altIdentifier/issn/1538-4489; info:eu-repo/semantics/altIdentifier/issn/2469-9950; https://bib-pubdb1.desy.de/record/481857Test; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2022-04591%22Test |
| الإتاحة: | https://doi.org/10.1103/PhysRevB.105.224201Test https://doi.org/10.3204/PUBDB-2022-04591Test https://bib-pubdb1.desy.de/record/481857Test https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2022-04591%22Test |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.CFA56D13 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |