Two PolyU researchers from the Research Institute for Advanced Manufacturing (RIAM) and the Department of Industrial and Systems Engineering (ISE), in collaboration with RMIT University and the University of Sydney, have successfully produced a new strong, ductile, and sustainable titanium alloy (α–β Ti-O-Fe alloy) using 3D printing (also known as additive manufacturing). The research study, titled “Strong and ductile titanium-oxygen-iron alloys by additive manufacturing”, was recently published in Nature. The new titanium alloy exhibits immense potential for diverse applications, ranging from aerospace and marine engineering to consumer electronics and biomedical devices.
Dr CHEN Zibin, Assistant Professor in the ISE Department, and Prof. Keith K.C. CHAN, Associate Director of RIAM, Associate Dean of Faculty of Engineering and Chair Professor of Manufacturing Engineering in the ISE Department, are the leading author and the co-author of the study, respectively.
The new titanium alloy produced by the research team was made through the use of 3D printing and the incorporation of oxygen and iron. The 3D printing method involved the recycling of off-grade sponge titanium, a waste product in traditional manufacturing, which were converted into powders as raw materials for producing high-performance titanium alloy. Oxygen and iron are inexpensive and abundant elements and can increase the stability and strength of α–β phase titanium alloys.
“Our work can facilitate the recycling of more than 10% of the waste generated by the metal alloy production industry. This can significantly lower both material and energy costs for industries, contributing to environmental sustainability and carbon footprint reduction,” said Dr Chen.
Press release:
Online coverage:
Oriental Daily News - https://polyu.me/3O9ACGl (Chinese only)
Hong Kong Economic Times - https://polyu.me/3Kd40u9 (Chinese only)
| Research Units | Research Institute for Advanced Manufacturing |
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