Sintering of Ti-10V-2Fe-3Al and mechanical properties

Yang, Y. F., Luo, S. D., Schaffer, G. B. and Qian, M. (2011) Sintering of Ti-10V-2Fe-3Al and mechanical properties. Materials Science and Engineering A: Structural Materials, 528 22-23: 6719-6726. doi:10.1016/j.msea.2011.05.041

Author Yang, Y. F.
Luo, S. D.
Schaffer, G. B.
Qian, M.
Title Sintering of Ti-10V-2Fe-3Al and mechanical properties
Journal name Materials Science and Engineering A: Structural Materials   Check publisher's open access policy
ISSN 0921-5093
Publication date 2011-08-25
Sub-type Article (original research)
DOI 10.1016/j.msea.2011.05.041
Volume 528
Issue 22-23
Start page 6719
End page 6726
Total pages 8
Place of publication Lausanne, Switzerland
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
A comprehensive study has been made of the sintering and microstructural evolution of Ti–10V–2Fe–3Al compacted from titanium and master alloy powder blends. The densification of Ti–10V–2Fe–3Al at ≤1300 °C occurs by solid-state sintering with apparent activation energy of 163 ± 13 kJ/mol, which falls into the reported activation energy range for the self-diffusion of titanium. The sintered density depends primarily on the titanium powder size while the sintered microstructure and mechanical properties depend mainly on the master alloy type or diffusion of vanadium. The real challenge for the fabrication of Ti–10V–2Fe–3Al by sintering is not densification, which is trivial with relatively fine titanium powder. Rather, it is the realisation of a desired microstructure through master alloy selection or design of the sintering pathway, which determines the distribution of the principal alloying element V, a slow diffuser in β-Ti. This distinguishes it from the sintering of lean alloys, where the focus has predominantly been on densification. The use of 10V–2Fe–3Al master alloy produced more uniform microstructures and therefore much better ductility than the use of 85V–15Al at similar densities.

Highlights: ► Densification is only the first step for the sintering of Ti–10V–2Fe–3Al. ► Master alloy selection or design of sintering pathway is the real challenge. ► The use of 10V–2Fe–3Al master alloy is preferred to the use of 85V–15Al. ► Sintering of Ti–10V–2Fe–3Al is mainly controlled by the self-diffusion of Ti.
Keyword Sintering
Titanium alloys
Powder consolidation
Beta-titanium alloys
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 20 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 21 Aug 2011, 01:11:46 EST by System User on behalf of School of Mechanical and Mining Engineering