Design of titanium alloy for efficient sintering to low porosity

Robertson, I.M. and Schaffer, G.B. (2009) Design of titanium alloy for efficient sintering to low porosity. POWDER METALLURGY, 52 4: 311-315. doi:10.1179/003258909X12502872942499

Author Robertson, I.M.
Schaffer, G.B.
Title Design of titanium alloy for efficient sintering to low porosity
Journal name POWDER METALLURGY   Check publisher's open access policy
ISSN 0032-5899
Publication date 2009-12-01
Year available 2009
Sub-type Article (original research)
DOI 10.1179/003258909X12502872942499
Open Access Status Not Open Access
Volume 52
Issue 4
Start page 311
End page 315
Total pages 5
Editor j. J. Dunkley
Place of publication United Kingdom
Publisher Maney Publishing
Language eng
Subject C1
861206 Structural Metal Products
0912 Materials Engineering
091207 Metals and Alloy Materials
Abstract Few Ti alloys have been designed for ease of sintering. This paper considers the design of alloys for processing using the mixed elemental technique, in which powders are mixed, cold pressed in a die to near net shape and sintered under vacuum at high temperature. The authors describe steps in the process of developing a Ti-Ni-Sn alloy, able to be sintered to near full density at a sintering temperature as low as 1100 degrees C without requiring unusually fine powder or high compaction pressure. Higher sintering temperature allows the Ni content of the alloy to be reduced, but swelling of the alloy probably imposes an upper limit on practical sintering temperature. The increase in green density, and hence sintered density, conferred by Sn in Ti-Sn alloys, and the increase in sintered density due to the high diffusivity of Ni in Ti-Ni alloys, are combined in Ti-Ni-Sn alloys.
Keyword Titanium
Alloy design
Q-Index Code C1
Q-Index Status Confirmed Code

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Created: Sun, 10 Jan 2010, 10:01:35 EST