Research on influence of heat treatment scheme of Ti10V2Fe3Al alloy on technological surface integrity after electrodischarge machining

The paper focus on the importance of heat treatment procedure of Ti10V2Fe3A alloy for the removal process during EDM. The goal of the research was to analyse the influence of Ti10V2Fe3Al alloy microstructure on the surface integrity after electrodischarge machining (EDM). By varying the time and temperature of the heat treatment operation the samples with various morphologies and a volume fraction of the alpha phase have been obtained. Then, all the samples were electrodischarge machined in sinking kinematics. The results analysis focuses on the microstructural changes, microhardness and geometrical properties of the machined surface. In the surface layer cross-section typical zones differing in chemical composition, microstructure and microhardness between samples with different initial morphologies and a volume fraction of the alpha phase were distinguished. Also significant differences in 3D surface roughness parameters such as Sa, Sz, Sq, Sk, obtained for each investigated sample after EDM were detected. Observed changes in surface layer corresponds to the temperature of heat treatment and annealing time and the resulting volume fraction of the alpha phase.

Automated summary

This paper focuses on the importance of heat treatment procedures for Ti10V2Fe3A alloy during the EDM removal process. The research aimed to analyze the influence of Ti10V2Fe3Al alloy microstructure on surface integrity after EDM, with significant differences in microstructural changes, microhardness, and geometrical properties of the machined surface observed. Changes in the surface layer were found to correspond to the temperature of heat treatment, annealing time, and resulting volume fraction of the alpha phase.