| چکیده انگلیسی مقاله |
This study uses advanced characterisation and mechanical evaluation to study nanostructured metal alloys for high-temperature application. Customised heat treatments were applied to powder metallurgy, severe plastic deformation, and casting alloy samples. SEM, TEM, EBSD, XRD, and TGA measured grain size, phase composition, and heat stability. Hardness, tensile, and creep tests at high temperature evaluated mechanical performance. ImageJ, ANOVA, and regression assessed grain metrics and high-temperature creep. Results show refined grain structures (20-200 nm), stable phase distributions, high hardness (>600 HV), and prolonged creep resistance at 600 °C. This shows that nano structuring and multi-modal characterisation may forecast mechanical behaviour under thermal stress, supporting new production options like virtual prototyping and alloy engineering. The study uniquely combines multiscale structural quantification (SEM/TEM/EBSD/XRD/TGA) with high-temperature mechanical performance (hardness, tensile, creep) and statistical validation to predict nanostructured alloy structure property correlations. |