Academic Journal
Reaching unconventionally large Hall-Petch coefficients in face-centered cubic high-entropy alloys
| العنوان: | Reaching unconventionally large Hall-Petch coefficients in face-centered cubic high-entropy alloys |
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| المؤلفون: | Jiaxiang Li, Kenta Yamanaka, Yongjie Zhang, Tadashi Furuhara, Guoqin Cao, Junhua Hu, Akihiko Chiba |
| المصدر: | Materials Research Letters, Vol 12, Iss 6, Pp 399-407 (2024) |
| بيانات النشر: | Taylor & Francis Group, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: | High-entropy alloy, Hall-Petch coefficient, grain boundary segregation, grain boundary strengthening, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: | ABSTRACTThe Hall-Petch strengthening coefficient of face-centered cubic alloys has the potential to increase. Herein, we experimentally determined an unconventionally large Hall-Petch coefficient equal to 1100 MPa·µm1/2 and a large lattice friction stress for novel Co0.95Cr0.8Fe0.25Ni1.8Mo0.475 high-entropy alloys (Mo0.475 HEAs). Detailed microstructural characterizations showed Mo segregation at grain boundaries (GBs) and no apparent nano-clustering in the matrix. With the increased Mo content, Mo segregating at GBs is an unexpected outcome. The unconventionally large Hall-Petch coefficient is ascribed to the newly generated effect due to Mo segregation at GBs, besides the factors in the grain interior, e.g. the increased solid-solution strengthening. This study is dedicated to enriching the diversity of Hall-Petch strengthening mechanisms for the development of high-strength materials. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 21663831 2166-3831 |
| Relation: | https://doaj.org/toc/2166-3831 |
| DOI: | 10.1080/21663831.2024.2337211 |
| URL الوصول: | https://doaj.org/article/048e6f086ace49349c2c3143b5aeb82b |
| رقم الانضمام: | edsdoj.048e6f086ace49349c2c3143b5aeb82b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21663831 |
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| DOI: | 10.1080/21663831.2024.2337211 |