![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
ABSTRACT
This paper reports microstructure and mechanical properties of spark plasma sintered γ–TiAl alloys. Prealloyed powders of γ–TiAl added with varying proportions of niobium were mechanically milled in a high energy ball mill with optimized parameters for 20 hours and were consolidated by spark plasma sintering with the temperature of 1100°C for 5 min. Microstructure was analyzed by Scanning and Transmission Electron Microscopes. X-ray Diffraction was used to study the resultant phases. The hardness increases from 980 Hv to 1075 Hv with increasing Nb content and the elastic modulus varies between 222 G Pa to 236 G Pa.