Comparative study for microstructural characterisations and properties of Ti-Y powders produced by vacuum induction gas atomization cold crucible process

ABSTRACT

Ti-based alloy powder is an excellent candidate as an additive manufacturing material, owing to its high strength-to-weight ratio, corrosion resistance and biocompatibility. However, molten Ti is highly reactive with ceramic crucibles. Thus, only crucible-free techniques can be used, limiting the manufacturing. In this study, Ti–Y, CP-Titanium powder was manufactured using the vacuum induction gas atomization cold crucible (VIGA-CC) process, without using any master alloy; moreover, its properties were elucidated. Characterisations were performed to comparatively analyse the surface morphology, impurity content and mechanical properties of the synthesised powder. It was found that the powder had a uniform composition and was refined by the yttrium addition. The VIGA-CC process, by which alloy powders with various compositions can be prepared, is expected to expand the list of target alloys that can be used in additive manufacturing processes.

KEYWORDS:

• VIGA
• cold crucible
• gas atomization
• titanium
• oxide dispersion strengthened alloys

Acknowledgements

This work was supported by the Industrial Strategic Technology Development Program-Development of Material Component Technology (20001221, ‘Development of high strength and fatigue resistance metal and manufacturing technology for root analogue dental implants’). It was funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea) and the Technical support for small and medium-sized companies enterprises project (JE210006, Construction of a platform for Korean-Russian cooperation in industrial technology and science) funded by the Korea Institute of Industrial Technology.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Korea Institute of Industrial Technology: [Grant Number UR200013]; Ministry of Trade Industry and Energy Korea (MOTIE, Korea): [Grant Number 20001221].

Notes on contributors

Dae-Kyeom Kim

Dae-Kyeom Kim is a Ph.D student at Hanyang University.

Young Il Kim

Young Il Kim is a MS student at Chungbuk National University.

Young Do Kim

Young Do Kim is a professor at Hanyang University.

Dongju Lee

Dongju Lee is a professor at Chungbuk National University.

Bin Lee

Bin Lee is a senior researcher at Korea Institute of Industrial Technology.

Taek-Soo Kim

Taek-Soo Kim is a principal researcher at Korea Institute of Industrial Technology.