Indexed on: 01 Nov '95Published on: 01 Nov '95Published in: Powder Metallurgy and Metal Ceramics
A study has been made to ascertain how high-temperature vacuum annealing affects the structure, strength, and chemical resistance of the material STIM-3B/3, which is based on titanium-chromium carbide and is obtained by self-propagating high-temperature synthesis. Annealing at a temperature above 1000°C reduces the average TiC grain size, increases the strength of the material, and makes it more soluble in nitric acid. The composition of TiC grains is not changed by annealing while the Cr content in the Cr3C2 grains decreases as the Ti, C, and Ni content rise. The changes in the structure and properties of STIM-3B occur because Ti, Cr, and C have different solubilities in nickel.