Evaluation and parameter analysis of compaction equations applied to titanium powder

ABSTRACT

Titanium is widely used in the fields of medicine, industry, and biological science due to its excellent properties. In addition, titanium powder metallurgy (PM) is widely used in production because it could considerably reduce the cost. The most critical step in PM is powder compaction. Thus, the compaction equation is highly important in the prediction and analysis of powder compaction process. In this paper, the experimental data of titanium hydride powder and hydrogenated-dehydrogenated titanium powder were fitted using different compaction equations, and all the equations could obtain a high fitting degree (R² > 0.99) and a small error. The linear compaction equation could distinguish the powder type and different particle size distribution forms in the same type of powder through fitting parameters. The nonlinear compaction fitting equation could also analyse the contribution of powder densification mechanism through parameter calculation.

KEYWORDS:

• Titanium powder metallurgy
• powder compaction
• linear compaction equation
• nonlinear compaction equation
• powder densification mechanism

Acknowledgements

The author would like to acknowledge the support of College of Materials Science and Engineering of Jilin University in China, International Center of Future Science of Jilin University in China, G.V. Kurdyumov Institute for Metal Physics in Ukraine.

Disclosure statement

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

Additional information

Notes on contributors

Shucheng Dong

Shucheng Dong is currently studying in the school of materials science and engineering of Jilin University, mainly focusing on the powder metallurgy of titanium alloy.

Fucheng Qiu

Fucheng Qiu is currently studying in the school of materials science and engineering of Jilin University, mainly focusing on the rapid heat treatment of titanium alloy.

Peng Lei

Peng Lei graduated from the school of materials science and engineering of Jilin University in 2021. At present, he is committed to the research of semiconductors.

Tuo Cheng

Tuo Cheng graduated from the school of materials science and engineering of Jilin University in 2017. At present, she works in Jilin University.

Guangyu Ma

Guangyu Ma is currently studying in the school of materials science and engineering of Jilin University, mainly focusing on the synthesis of titanium alloy.

Lijie Qu

Lijie Qu graduated from Jilin University in 2020 and currently works at Beijing Institute of technology.

Orest Ivasishin

Orest Ivasishin and his team have been carrying out theoretical and applied investigations in the field of phase and structural transformations in metals and alloys under highly non-equilibrium conditions. From 1977 to 1991 he took part in defense research programs under contracts with Ministry of Aviation Industry of USSR (development of materials and technologies for aircrafts and missiles). At present, he works in the Joint International Center of Future Science of Jilin University.