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- W4220851207 abstract "Al0.3CoCrFeNi high entropy alloy (HEA), as a widely studied alloy with excellent plasticity and low strength has received a widespread attention. In this work, the strength of this alloy could be improved by addition of Ti for satisfying its engineering application. And then the effect of Ti on the evolutions of phase, microstructure and corresponding mechanical properties of as-cast Al0.3CoCrFeNiTix HEAs were investigated. The results demonstrated that addition of Ti could promote the microstructure of the alloys transforming from a single-phase structure to a typical dendritic structure. Simultaneously, minor Ti content caused formation of the (Al, Ni, Ti)-rich L12 phase in alloys, and then further addition of Ti content promoted formation of the (Co, Ti)-rich Laves, (Ni, Ti)-rich γ and (Fe, Cr)-rich σ phases in the Ti0.3, Ti0.4 and Ti0.5 alloys. The volume fraction of these phases increased with Ti content increasing. The evolutions of the phase and microstructure greatly modified the mechanical properties of the alloys. With the increase of Ti content, the hardness of the alloys increases from 124 (Ti0) to 448 (Ti0.5) HV, and the yield strength from 167 (Ti0) to 698 (Ti0.4) MPa. Based on the correlation between microstructure and strength, the strengthening mechanisms of current HEAs were analyzed, confirming that the precipitation strengthening is the dominant strengthening mechanism." @default.
- W4220851207 created "2022-04-03" @default.
- W4220851207 creator A5008021343 @default.
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- W4220851207 creator A5085090071 @default.
- W4220851207 date "2022-06-01" @default.
- W4220851207 modified "2023-09-27" @default.
- W4220851207 title "Evolution of phase, microstructure and mechanical properties of as-cast Al0.3CoCrFeNiTix high entropy alloys" @default.
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- W4220851207 doi "https://doi.org/10.1016/j.mtcomm.2022.103328" @default.
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