Ultrahigh strength and toughness in W-Y2O3 alloy with bimodal and lamellar structures
Autor: | Lulu Li, Zhi Dong, Zongqing Ma, Chenxi Liu, Liming Yu, Yongchang Liu |
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Jazyk: | angličtina |
Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Materials Research Letters, Vol 11, Iss 6, Pp 439-445 (2023) |
Druh dokumentu: | article |
ISSN: | 21663831 2166-3831 |
DOI: | 10.1080/21663831.2023.2181110 |
Popis: | Oxide dispersion strengthened tungsten (ODS-W) alloy was prepared by chemical method, conventional sintering and hot-rolling method, which breaks through the research bottleneck of preparing tungsten alloys with excellent comprehensive mechanical properties. More specifically, it can exhibit ultrahigh strength and superior toughness when tested at 200°C. In addition, the nil ductility temperature (NDT) can also dramatically decrease to 100–150°C. The bimodal structure formed by the uneven distribution of yttria and the lamellar structure formed by hot rolling in this ODS-W alloy provide a feasible way to develop other engineering materials with ultra-high strength and ductility. |
Databáze: | Directory of Open Access Journals |
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