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- Title
Preparation of Ti-6Al-4V feedstock for titanium powder injection molding.
- Authors
Lin, Dongguo; Chung, Sung Taek; Kwon, Young Sam; Park, Seong Jin
- Abstract
Titanium powder injection molding (Ti-PIM), combining the advantages of both powder metallurgy and plastic injection molding, is an effective manufacturing technology for a near net shape production of titanium parts. In this work, titanium feedstock was fabricated by mixing the pre-alloyed Ti-6Al-4V powder with a wax-polymer binder system after determining their critical solid loading percentage. The rheological and binder decomposition behaviors of prepared feedstock were investigated. The results showed that the feedstock had a critical solid loading of 71 vol. % and the flow activation energy for fabricated feedstock was 64 kJ/mol. The binders were decomposed with two sigmoids functions, where the activation energies for the first and second sigmoid decomposition were 68 kJ/mol and 224 kJ/mol, respectively. The results indicated that the Ti-6Al-4V feedstock was well prepared and would provide good rheological and thermal decomposition behaviors for injection molding and thermal debinding process in Ti-PIM.
- Subjects
FEEDSTOCK; RAW materials; TITANIUM; POWDER metallurgy; COMPACTING; INJECTION molding
- Publication
Journal of Mechanical Science & Technology, 2016, Vol 30, Issue 4, p1859
- ISSN
1738-494X
- Publication type
Article
- DOI
10.1007/s12206-016-0343-y