A light-weight high-entropy alloy Al20Be20Fe10Si15Ti35

A light-weight high-entropy alloy Al20Be20Fe10Si15Ti35

A light-weight high-entropy alloy (LWHEA) Al 20 Be 20 Fe 10 Si 15 Ti 35 has been developed to have unique mechanical properties and oxidation resistance. One major and two minor phases are observed in the as-cast microstructure. The density of the alloy is 3.91 g cm −3 , and its hardness is HV 911,...

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Veröffentlicht in:Science China. Technological sciences 2018-02, Vol.61 (2), p.184-188
Hauptverfasser: Tseng, KoKai, Yang, YaChu, Juan, ChienChang, Chin, TsungShune, Tsai, CheWei, Yeh, JienWei
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Density ratio
Engineering
Hardness
High entropy alloys
Mechanical properties
Oxidation
Oxidation resistance
Titanium base alloys
Weight reduction
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Zusammenfassung:A light-weight high-entropy alloy (LWHEA) Al 20 Be 20 Fe 10 Si 15 Ti 35 has been developed to have unique mechanical properties and oxidation resistance. One major and two minor phases are observed in the as-cast microstructure. The density of the alloy is 3.91 g cm −3 , and its hardness is HV 911, which is higher than quartz. The hardness and hardness to density ratio are the highest of all light-weight alloys reported before. In addition, it has excellent oxidation resistance at 700°C and 900°C, which far exceeds that of Ti-6Al-4V. Thus, the combination of properties is promising for high-temperature applications, which require light weight, wear-resistant and oxidation-resistant components.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-017-9073-0