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Australian scientists have developed a new type of titanium alloy using 3D printing

2023-06-13 15:19

 Scientists from University of Sydney, Australia, Royal Melbourne University of Technology and other institutions have developed a new type of titanium alloy through unique alloy design and 3D printing technology. The new research provides a feasible method for more sustainable manufacturing of high-performance titanium alloys, which can be widely used in aerospace, biomedical, Chemical engineering, national defense, clean energy and other fields.

The University of Sydney recently released a bulletin saying that the titanium alloy developed by the research team consists of a mixture of two forms of titanium crystals, respectively called α— Titanium phase and β— Titanium phase, each type of titanium crystal corresponds to a specific arrangement of titanium atoms. Traditional titanium alloys are produced by adding an appropriate amount of aluminum element to metallic titanium, while new research uses oxygen and iron elements to manufacture titanium alloys. These two elements have abundant reserves, low prices, and can be used as α— Titanium phase and β— Stabilizer and reinforcing agent for titanium phase titanium crystals.

According to researchers, preparing titanium oxide iron alloys using traditional processes faces two challenges: one is the embrittlement effect of oxygen on metallic titanium, and the other is that adding iron may lead to the formation of large blocks β— Serious structural defects occur in titanium crystals, which can affect the performance of the alloy.

In order to overcome the limitations of traditional processes for producing titanium oxide iron alloys, the team designed a unique alloy microstructure and utilized a 3D printing process called laser directed energy deposition to prepare a new type of titanium oxide iron alloy using metal powders and other raw materials. The relevant paper has been published in the UK journal Nature.
Researchers have stated that the embrittlement effect caused by oxygen is one of the main challenges in the metallurgical field, and the new research provides reference for improving the embrittlement problem caused by oxygen through 3D printing and microstructure design.