Dual heterogeneous structure facilitating an excellent strength-ductility combination in an additively manufactured multi-principal-element alloy
| Autor: | Jing Huang, Wanpeng Li, Junyang He, Rui Zhou, Tzu-Hsiu Chou, Tao Yang, Chain-Tsuan Liu, Weidong Zhang, Yong Liu, Jacob C. Huang |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Materials Research Letters, Vol 10, Iss 9, Pp 575-584 (2022) |
| Druh dokumentu: | article |
| ISSN: | 21663831 2166-3831 |
| DOI: | 10.1080/21663831.2022.2067790 |
| Popis: | The (FeCoNi)86Ti7Al7 multi-principal-element alloy with a dual heterogeneous microstructure was successfully fabricated by selective laser melting, exhibiting an excellent combination of strength (ultimate tensile strength, 1085.2 ± 23.2 MPa) and ductility (30.5 ± 2.6%). It is evidenced that the joint effects of the hetero-deformation induced hardening from grains with heterogeneous geometrically necessary dislocations densities, in-situ formed B2 phase, and the coherent precipitation hardening from in-situ formed nano L12 phase were responsible for the strength. This work sheds light on the feasibility of simplifying the production of multi-mechanism strengthened alloys within one step and paves a new avenue to produce high-performance complex-shaped components. |
| Databáze: | Directory of Open Access Journals |
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