Key applications and innovative research and development of titanium alloys in modern aerospace rocket technology

With the rapid development of aerospace in the 21st century, the requirements for aerospace rocket technology are becoming increasingly stringent, especially the research and development of high pulse thrust-to-weight ratio engines, which has become the key to promoting the advancement of aerospace technology. In this context, titanium alloy, as a metal material with excellent high temperature strength, low temperature toughness and excellent processing performance, has become the core material in advanced aerospace rocket technology products. Exploration of the application of titanium alloys in extreme environments For parts in aerospace rockets that need to withstand extreme temperatures (-200℃ to higher), such as φ600mm large die forgings, accumulator plates, bearing bracket blanks and pipe joints, the Russian Institute of Metals is committed to the process optimization and performance improvement of BT6c alloy. This alloy can not only work stably at -200℃, but also further reduce its operating temperature limit to 253℃ through particle metallurgy technology, significantly improving the overall performance of the material. This innovative process ensures the uniformity of the fine grain structure of each part of the blank, achieves isotropic performance, and provides reliable material support for rocket components under extreme conditions. Wide application and optimization of two-phase titanium alloys In the wide application of space rockets, two-phase titanium alloys such as BT6c, BTl4, BT3-1, BT23, BTl6, BT9 (BT8), etc., have become the preferred materials for key components due to their excellent heat treatment strengthening performance. For example, BT6c alloy is widely used in various components with high strength requirements in the heat treatment strengthening state of σb=1050MPa-1100MPa. BT14 alloy shows its unique advantages in the high strength range of σb=1100MPa~1150MPa. It can not only be used to manufacture tubular beam-shaped components with a diameter of 80mm to 120mm, but also can be used as fasteners in a low temperature environment of -196℃.
Future prospects of Ti-Al intermetallic compound-based alloys In order to further improve the performance of space rockets, researchers are turning their attention to Ti-Al intermetallic compound-based alloys. This type of alloy is regarded as a leader in the new generation of space rocket materials with its unique comprehensive performance, high thermal strength, high elastic modulus and low density. At present, the "Composites" Research and Production Joint Company is committed to developing comprehensive preparation process equipment for these new materials, including advanced melting, pelletizing and isothermal deformation equipment, to promote the widespread application of Ti-Al alloys in the aerospace field. The application of titanium alloys in modern aerospace rocket technology not only reflects the latest achievements in materials science, but also heralds the future development direction of aerospace technology. By continuously exploring and optimizing the preparation process and performance of titanium alloys, researchers are providing more reliable and efficient material solutions for aerospace rockets, helping humans to realize their grand blueprint for exploring the universe.