In most situations, predicting wear requires a variety of microstructural characterizations and experiments with contact surfaces. Based on physical principles, mathematical models might be of great assistance in understanding and thereby predicting this event. Considering the significance of heat generation in war, it appears that the parameters of thermodynamics are appropriate measurements for wear modelling. Entropy is among these parameters of thermodynamics. The Miedema model is a good method to predict the Gibbs free energy and entropy of solid solutions of binary and ternary systems. In this study, the wear behaviour of iron-based alloys according to their estimating values of Gibbs free energies and entropy was studied under lubricated conditions. The wear test was performed in accordance with ASTM-G99, utilizing the vertical universal friction testing machine MMW-1A and the pin-on-disk test methodology. Results show that the lowest negative value of Gibbs free energy was noted in the Fe-Al-Sn ternary system (-14.37 KJ/mol), while the highest negative value was found in the Fe-Al-V (-25.16 KJ/mol) binary system. It was also concluded that the wear rate decreased when the entropy estimate increased. The higher value of the wear rate was (6.935 mm3\N.m x107) for Fe-Al binary alloy with an entropy value (1.717 J\k Mole). The lowest value of wear rate was (3.581 mm3\N.m *107) for Fe-Al-Sn ternary alloy with an entropy of (2.71 J\k Mole). This is due to the micro-distortion that was mechanically indicated with the ternary alloys Fe-Al with V, Mn, Ga.B, and Sn additives that affected the wear mechanism and caused high values of wear. situations surfaces principles event war modelling systems study ironbased iron based conditions ASTMG99, ASTMG99 ASTMG ASTM G99, G99 G ASTM-G99 MMW1A MMWA MMW 1A A pinondisk pin disk methodology FeAlSn Fe Al 14.37 1437 14 37 (-14.3 KJ/mol, KJmol KJ/mol , KJ mol FeAlV V 25.16 2516 25 16 (-25.1 increased 6.935 6935 6 935 (6.93 mm3Nm mmNm mm3 N m mm x107 x FeAl 1.717 1717 1 717 (1.71 Jk J k Mole. Mole . Mole) 3.581 3581 3 581 (3.58 *107 107 2.71 271 2 71 (2.7 microdistortion micro distortion Mn GaB Ga B Ga.B ASTMG9 G9 ASTM-G9 14.3 143 (-14. 25.1 251 (-25. 6.93 693 93 (6.9 Nm x10 1.71 171 (1.7 3.58 358 58 (3.5 *10 10 2.7 27 7 (2. ASTM-G 14. (-14 25. (-25 6.9 69 9 (6. x1 1.7 17 (1. 3.5 35 5 (3. *1 2. (2 (-1 (-2 6. (6 1. (1 3. (3 * ( (-

The existing work is dedicated toward the manufacture of ZA-27/TiC as composites material via powder metallurgy. A mixture of Zn and Al with 63 and 27 wt%, respectively, is ball milled for 4 hrs at 145 rpm. Then, samples with disk-like shapes were made through pressing under 600 MPa and afterward sintered at 336 °C for 90 minutes in an electric furnace in argon gas. Other three groups from the above Zn and Al mixture ratio were prepared but with the addition of 3, 6, and 9 wt% TiC particles independently. The group's samples were prepared at the same conditions above. Hardness, density, and porosity microstructure observations, including optical and SEM-Mapping techniques were utilized to validate the effect of TiC particle additions with the listed above contents on the prepared ZA-27 alloy properties. The practical density of the prepared ZA-27 alloy is decreased basically owing to the used powder metallurgy route and with a lesser degree due to TiC addition. In contrast, the porosity is increased. But the hardness of the ZA-27 alloy is improved when TiC was added, and it was increased from 49.4 to 66 VHN with 0 to 9 wt% TiC addition. The optical microscope and SENM-Mapping facilities explained the distribution of co-existing Zn, Al, and TiC particles in the microstructures of the tested samples to improve the properties of ZA alloy. ZA27/TiC ZA27TiC ZATiC 27/TiC 6 2 wt respectively 14 rpm Then disklike disk like 60 33 C gas 3 independently group s Hardness observations SEMMapping SEM Mapping ZA27 ZA-2 contrast added 494 49 49. SENMMapping SENM coexisting co 27TiC 1 ZA2 ZA-