The modern transport industry uses a combination of materials with different properties. This makes it possible to make the most important structural elements both lightweight and durable. In this regard, the combination of aluminum and titanium alloys is considered to be the most attractive. However, the incompatibility of the thermophysical characteristics of these materials significantly complicates the process of their permanent connection.
According to employees of the Research Institute of Materials Science and Innovative Nanotechnologies at the National Research University “BelSU”, this problem can be solved by using an innovative method of friction welding with mixing. But with regard to aluminum and titanium alloys, the use of this technology is usually accompanied by intensive wear and tear on the working tool. This leads to the formation of a brittle intermetallic layer on the interface between the materials being welded. Therefore, in order to obtain high-strength welded joints from aluminum and titanium alloys, scientists had to improve the welding method.
The new development will make it possible to eliminate the use of expensive tungsten carbide working tools. Scientists will continue research in this area. The study was carried out as part of a project by the Russian Science Foundation.
Source: bel-pobeda.ru
