Study on the Properties of Ti-Al-Nb Alloy

The high temperature oxidation resistance and high temperature wear resistance of Ti-Al-Nb alloy samples with different contents of Al and Nb elements were tested,compared and analyzed.The results show that with the increase of Al content and Nb content,the mass gain per unit area and high temperature wear volume of the sample decrease first and then increase slightly,and the high temperature oxidation resistance and high temperature wear resistance increase first and then decrease slowly.The mass gain per unit area and high temperature wear volume of the sample with 14% Al content respectively decrease by 53.85% and 50% comparing with those of the alloy with 8% Al content.And the mass gain per unit area and high temperature wear volume of the sample with 35% Nb content respectively decrease by 43.75% and 41.38% comparing with those of the alloy with 20% Nb content.The Al content and Nb content of Ti-Al-Nb alloy are optimized at 14% and 35%,respectively.