TY - JOUR
T1 - Influence of the sintering method on microstructure and microhardness of AlCuNiSnZn-based high-entropy brasses and bronzes obtained by powder metallurgy
AU - Laguna-Zubia, L. D.
AU - Garay-Reyes, C. G.
AU - Guerrero-Seañez, P. A.
AU - Ruiz-Esparza-Rodríguez, M. A.
AU - Mendoza-Duarte, J. M.
AU - Estrada-Guel, I.
AU - Gonzalez Sanchez, Sergio
AU - Martinez-Garcia, A.
AU - Martínez-Sánchez, R.
N1 - Funding information: The authors would like to thank and acknowledge the valuable technical assistance during the experimental development of the present work: K. Campos-Venegas (SEM), C.E. Ornelas-Gutierrez (TEM) and E. Guerrero-Lestarjette (XRD).
PY - 2024/4/1
Y1 - 2024/4/1
N2 - 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.
AB - 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.
KW - (AlCuNi)SnZn alloys
KW - High-entropy brass and bronze
KW - Microhardness
KW - Powder metallurgy
KW - Sintering
UR - http://www.scopus.com/inward/record.url?scp=85183455817&partnerID=8YFLogxK
U2 - 10.1016/j.vacuum.2024.113006
DO - 10.1016/j.vacuum.2024.113006
M3 - Article
AN - SCOPUS:85183455817
SN - 0042-207X
VL - 222
JO - Vacuum
JF - Vacuum
M1 - 113006
ER -