Titanium alloys used in additive manufacturing are usually bonded together in the form of columnar crystals during 3D printing, which is very easy to crack or deform. In addition, unlike aluminum or other commonly used metals, there is no commercially available titanium grain refiner for optimizing the microstructure of titanium alloys.

Recently, according to the journal Nature, researchers at the Royal Melbourne Institute of Technology (RMIT) in Australia have developed a new copper-containing titanium alloy that is expected to solve the above problems. RMIT Engineering Professor Mark Easton said: "The titanium-copper alloys we manufacture are not subjected to any special process, and only need to use 3D printing to have 'excellent performance'. It is especially worth noting that the grains of titanium-copper alloys are They grow very uniformly in all directions, and they form a complete equiaxed crystal structure through strong bonding. This avoids the weakness of columnar crystals that are easy to crack. Titanium-copper alloy can withstand more powerful forces during the manufacturing process Not prone to structural defects. "

The project's partners also include Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the University of Queensland.

CSIRO researcher Mark Gibson said: "Titanium-copper alloy is just a combination of many titanium-based alloys. The use of other alloying elements or heat treatment processes may further improve the performance of the material. New alloys can improve manufacturers' production efficiency, and Making the manufacture of more complex parts feasible. "

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