Titanium ring, titanium cake, target block and other titanium alloy forging defects easy to appear

Small proportion of titanium alloy (4.5), high melting point (1660 ℃), plasticity is good, is better than high strength, corrosion resistance is strong, can work for a long time under high temperature (500 ℃) heat strong titanium alloy at present has been used to wait for an advantage, and thus has more and more important bearing used in aircraft and aircraft engine components, in addition to the forging of titanium alloy material, and castings, plate (such as aircraft skin), fasteners and so on. The weight ratio of titanium alloy used in modern foreign aircraft has reached about 30%. It can be seen that the application of titanium alloy in aviation industry has a broad future. Of course, titanium alloy also has the following disadvantages: for example, deformation resistance, poor thermal conductivity, large notch sensitivity (about 1.5), changes in microstructure have a significant impact on mechanical properties, resulting in the complexity of smelting, forging and heat treatment. Therefore, it is a very important subject to use nondestructive testing technology to guarantee the metallurgical and processing quality of titanium alloy products.