abstract

• The present report focused on synthesizing and characterizing a series of AlCuNiSnZn alloys obtained by powder metallurgy as a new family of high-entropy brasses and bronzes. The (AlCuNi)80Sn10Zn10 and (AlCuNi)70Sn15Zn15 alloys were obtained by mechanical alloying and sintering, evaluating two sintered methods: high-frequency induction heat and conventional. After 10 h of mechanical alloying, the elemental powder mixture formed solid solutions of face-centered cubic (FCC-α) and body-centered cubic (BCC-β) phases. However, the solid solutions, after sintering, were decomposed into a mixture of γ Ni2Zn11, AlNi, and Cu2Ni3Sn3 phases. The (AlCuNi)80Sn10Zn10 system sintered by high-frequency induction heat exhibits a microhardness value of ∼501 HV±17, while that obtained by the conventional method was ∼320 ± 21 HV. The results showed that it is convenient to maintain the BCC/FCC solid solutions after sintering due to their stability and properties. In addition, it is necessary to design alloys with lower values of ΔHmix to improve the microhardness.

authors

• Estrada-Guel I.
• Garay-Reyes C.G.
• González S.
• Martínez-Sánchez R.
• Mendoza-Duarte J.M.
Ruiz-Esparza-Rodríguez M.A.
... more

publication date

• 2024-01-01

funding provided via

• E. Guerrero-Lestarjette  Grant

published in

• Vacuum  Journal

keywords

• (AlCuNi)_xSn_yZn_z alloys; High-entropy brass and bronze; Microhardness; Powder metallurgy; Sintering Aluminum alloys; Binary alloys; Brass; Mechanical alloying; Microhardness; Sintering; Solid solutions; Ternary alloys; (alcuni)xsnyznz alloy; Body-centred cubic; Conventional methods; Elemental powder mixture; Face-centred cubic; High frequency induction; High-entropy brass and bronze; Property; Sintering methods; Bronze

Digital Object Identifier (DOI)

• 10.1016/j.vacuum.2024.113006

PubMed ID

start page

end page

volume

• 222

issue