Details

Autor(en) / Beteiligte

• Laguna-Zubia, L.D.
• Garay-Reyes, C.G.
• Guerrero-Seañez, P.A.
• Ruiz-Esparza-Rodríguez, M.A.
• Mendoza-Duarte, J.M.
• Estrada-Guel, I.
• González, S.
• Martinez-Garcia, A.
• Martínez-Sánchez, R.

Titel

Influence of the sintering method on microstructure and microhardness of AlCuNiSnZn-based high-entropy brasses and bronzes obtained by powder metallurgy

Ist Teil von

• Vacuum, 2024-04, Vol.222, p.113006, Article 113006

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. •10 h of mechanical alloying allows the obtained mixture of solid solutions.•The alloys sintered by high-frequency induction heat exhibit a higher microhardness.•It is convenient to maintain the BCC/FCC solid solutions after sintering.•It is necessary to design alloys with lower ΔHmix to improve the microhardness.