Enhanced Functionality for Pure Titanium Fabricated by a Combination of Mechanical Milling and Spark Plasma Sintering

Abstract

This review paper presents a brief background of a concept for both alloy design and process design in order to enhance properties of pure titanium applying a combination of mechanical milling (MM) and spark plasma sintering (SPS) process. Powder processing, such as MM, is one of an effective technique for the enhanced properties of the powders. Especially, adding stearic acid as a process control agent (PCA), is significantly effective for not only reducing cold weld, but also strengthening the matrix in pure titanium during the MM process. SPS is the advanced consolidation technique for the powders synthesised by the MM process with relatively shorter sintering time and lower sintering temperature. The properties for two types of developed titanium materials fabricated by the MM-SPS process with PCA will be introduced.