Optimization of Manufacturing Titanium-Magnesium alloy for Biomaterial Applications using Grey Relational Analyses

Abstract

Abstract The present paper is focusing on improving the performance of titanium-magnesium alloys prepared by the powder metallurgy technique. These alloys show good biocompatibility and bioactivity, but there is still a demand to study their manufacturing factors. Optimizing the manufacturing process of Ti-Mg alloys increases its expected life. The response selected to evaluate the produced alloys are the hardness, the compressive strength, and the porosity, while the affecting manufacturing parameters are the compacting pressure, sintering time, and magnesium content. Three levels of these parameters were selected to design the experiments based on a standard L9 orthogonal array of the Taguchi method. A Grey relational analysis method was performed to optimize the responses. The obtained experimental results were analyzed using Minitab 16 software at a confidence level of 0.5%. The results indicated that the selected parameters significantly influence the responses of the alloy samples. The optimum level of the affecting parameters was found in a compacting pressure of 760MPa, sintering time of 6hours, and 15wt% of magnesium content.