Chinese scientists develop high fatigue resistance 3D printed titanium alloy

Zhang Zhefeng's team at the Institute of Metal Research, Chinese Academy of Sciences recently developed a 3D printed titanium alloy material with high fatigue resistance. The research results were published in the international journal "Nature".
Researchers discovered in high-temperature experiments on a certain titanium alloy material that there is a valuable heat treatment process window that can suppress the appearance of pores. On this basis, they invented a new process for step-by-step control of defects and structures, and finally produced almost Porous titanium alloy material. This material can increase the tensile-tensile fatigue strength of titanium alloy from the original 475 MPa to 978 MPa in cyclic tests.
According to Zhang Zhefeng, a researcher at the Institute of Metal Research, Chinese Academy of Sciences, 3D printing technology is currently widely used in aerospace applications. The new technology they developed can increase fatigue life by ten to hundreds of times under the same load. For the same life expectancy, the applied load will be ten to fifteen percent higher.