Kaygısız, Yusuf2024-09-032024-09-0320242053-1591https:/dx.doi.org/10.1088/2053-1591/ad6958https://hdl.handle.net/20.500.12451/12393This study examined the impact of solution heat treatment on the microstructure, mechanical characteristics, thermophysical properties, and electrical resistivity of an Al-Ni-Mn near-eutectic alloy. The investigation focused on varying temperatures and holding periods. The composition of the Al-Ni-Mn near-eutectic alloy system was chosen as Al-5.3%Ni-1.0%Mn (wt). In the non-heat-treated sample, the matrix phase (?-Al) is in equilibrium with the intermetallic Al9(Mn,Ni)2 and Al3Ni phases. The hardness value of the non-heat-treated sample (49.8 kg mm?2) increased to 70.1 kg mm?2 with 2 h of solution heat treatment at 570 °C and then 8 h of artificial aging at 180 °C. The hardness value increased by approximately 41%. TE: 651.81 °C for the non-heat-treated sample and TE:648.79 °C for the heat-treated sample. Fusion enthalpy (?H) value was determined as 336.79 (J g?1) for the non-heat-treated sample and 516.36 (J g?1) for the heat-treated sample. Heat Capacity (Cpl) value was found to be 0.364 J g?1.K for the non-heat-treated sample and 0.560 J g?1.K for the heat-treated sample. The electrical resistivity value of the 2 h’ solution heat-treated sample at 600 °C reached its highest value.eninfo:eu-repo/semantics/openAccessAl9(MnHeat TreatmentMicrostructureNi)2 PhaseAluminium AlloysArticle11810.1088/2053-1591/ad6958Q2N/A