Data for: Microstructural Evolution, Diffusion Kinetics, and Enhanced Tribological Performance of Gas-Nitrided NAK80 Steel for Precision Mold Applications

This dataset contains raw and processed data supporting the research article titled "Microstructural Evolution, Diffusion Kinetics, and Enhanced Tribological Performance of Gas-Nitrided NAK80 Steel for Precision Mold Applications". The provided data includes: 1. Microstructural Images: High-resolution Optical Microscopy (OM) and Scanning Electron Microscopy (SEM) micrographs showing the nitrided layer morphology and case depth for various temperatures (480°C, 510°C, 540°C, and 570°C). 2. Chemical Analysis: Energy Dispersive Spectroscopy (EDS) mapping and line scan profiles detailing the nitrogen distribution and alloy element gradients across the diffusion interface. 3. Phase Identification: X-ray Diffraction (XRD) raw data and patterns confirming the formation of γ’-Fe4N and ε-Fe2-3N nitride phases. 4. Mechanical Testing: Raw microhardness (Vickers) distribution profiles and effective case depth (ECD) measurements. 5. Tribological Performance: Coefficient of Friction (COF) logs, wear rate calculations, data obtained from dry sliding Pin-on-Disk tests. This dataset aims to provide a comprehensive metallurgical foundation for optimizing the surface integrity of NAK80 tool steel in high-precision mold manufacturing.