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Enhancement in Ti–6Al–4V sintering via nanostructured powder and spark plasma sintering

Crosby, Kyle and Shaw, Leon and Estournès, Claude and Chevallier, Geoffroy and Fliflet, Arne Woolsey and Imam, M. Ashraf Enhancement in Ti–6Al–4V sintering via nanostructured powder and spark plasma sintering. (2014) Powder Metallurgy, 57 (2). 147-154. ISSN 0032-5899

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Official URL: http://dx.doi.org/10.1179/1743290113Y.0000000082

Abstract

Studies are performed to enhance low temperature sintering of Ti–6Al–4V. High energy ball milling is found to be effective in lowering the sintering temperature through the mechanisms of particle size reduction and nanograin formation. The former reduces the diffusion distance for densification, whereas the latter introduces an additional densification mechanism allowing mass transport from the interior of the particle to the neck zone. Together, these two effects can reduce the onset temperature for densification by about 300uC. Spark plasma sintering can further improve low temperature sintering when compared with radiant heat sintering and microwave sintering. The enhanced densification is discussed on the basis of the applied pressure (50 MPa) and the intrinsic joule effect that leads to increase in the local temperature at the contact point between particles.

Item Type:Article
Additional Information:Thanks to Maney Publishing. The definitive version is available at http://www.maneyonline.com/doi/abs/10.1179/1743290113Y.0000000082
HAL Id:hal-01131920
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Illinois Institute of Technology (USA)
Other partners > University of Connecticut - UCONN (USA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > United States Navy - USNavy (USA)
Laboratory name:
Funders:
US National Science Foundation
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Deposited By: cirimat webmestre
Deposited On:16 Mar 2015 13:22

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