Effect of Reinforcement Content and Milling Time on TiN-IN625 Composites

Abstract

Inconel 625 superalloy metal matrix composite reinforced with titanium nitride through powder metallurgy technique is an alternative for improving the mechanical properties of the well-known corrosion-resistant nickel alloy. In this paper, high-energy ball milling (HEBM) produced the TiN-Inconel 625 composite powders in a SPEX-type vibrating mill. The objective was to address the effect of the reinforcement content and milling time on the characteristics of the composite powders for posterior application on laser cladding. Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Laser Diffraction (LD), and X-ray diffraction (XRD) characterized the samples. The results showed that HEBM provided an effective method for producing TiN-Inconel 625 composites due to the good integration of TiN reinforcement into the nickel alloy matrix.

Keywords:
Inconel 625; TiN; Metal Matrix Composites; High-Energy Ball Milling