The first extensive use of aircraft damage tolerance type ti
Time: 2013-07-25 23:49
Construction of aeronautical materials like wood, building the base for aviation, and titanium alloy materials are like the bars of these materials. Titanium alloys due to high strength, good corrosion resistance, heat resistance characteristics, mainly used in the manufacture of aircraft components and main bearing engine compressor components. Manufacture of aircraft with titanium material must be based on the domestic, take the road of independent innovation, long time to get rid of dependence on foreign aviation critical titanium alloy passive situation, to achieve self-protection.
China's first high-toughness Damage Tolerance Titanium (TC21) in a number of models on the critical load-bearing components leading applications installed, so Damage Tolerance titanium bearing in our critical aircraft components to obtain high-volume applications, the realization "zero" breakthrough, thereby increasing the amount of titanium aircraft and application level and the safety and reliability. While in our country aircraft using TC4-DT Strong high damage tolerance type titanium alloy to improve the aircraft's weight loss, life and safety and reliability. China in the first extensive use of aircraft damage tolerance type titanium alloy, the TC4-DT Damage Tolerance and TC21 titanium alloy materials technology and other advanced research achievements, successfully applied to a large number of large aircraft safety critical bearing life grade components, this process need to overcome aircraft applications and the actual production of a large number of technical and application problems. For example, through the material and process innovation, so set TC21 titanium alloy, high strength, high toughness, high modulus, excellent welding performance, damage tolerance five features in one of the world's leading integrated performance levels; while TC4-DT titanium alloy with medium strong, high toughness, good weldability, damage tolerance characteristics, compared to similar foreign material has excellent performance even more comprehensive and used widely, to achieve our aircraft titanium from imitation to innovation, from static strength to damage tolerance from a single integrated high performance to a major leap; forging in solving large-scale structure refinement, making billet molding, processing and quasi-β basket organization and clutter control and other key technologies, based on the residual stress control elements further surface structural integrity, machining defect control and burns repair, the actual process of using the key technical issues conducted in-depth research, design and safe use provides an important reference, to avoid, to save the whole frame member titanium scrap . TC4-DT Damage Tolerance and TC21 titanium alloy is the key to the trunk of aircraft materials with strict internal quality requirements, process control, high precision, overall performance matching is difficult, complex structural components and the application of key parts and so on.
