SANS and SAXS Studies on Co-Re Alloys for High Temperature Applications

0389043 - ÚJF 2013 AU eng C - Conference Paper (international conference)
Gilles, R. - Mukherji, D. - Strunz, Pavel - Eckerlebe, H. - Roesler, J.
SANS and SAXS Studies on Co-Re Alloys for High Temperature Applications.
SAS 2012 - Proceedings of the 15th International Small-Angle Scattering Conference. Sydney: SAS Conference, 2012 - (McGillivary, D.; Trewhella, J.; Gilbert, E.; Hanley, T.), P035-P035. ISBN 1-921268-15-8.
[15th International Small-Angle Scattering Conference. Sydney (AU), 18.11.2012-23.11.2012]
Institutional support: RVO:61389005
Keywords : Co-base alloys * Ni-base superalloys * high temperature
Subject RIV: BM - Solid Matter Physics ; Magnetism
http://paperlessevent.com.au/SAS2012.zip

The Co-Re based alloys, a new class of high temperature material with relatively high melting point was introduced by the technische Univesität Braunschweig, Germany, in 2007 to supplement Ni-base superalloys in future gas turbines. co-base alloys are presently used in gas turbines mainly in static components like vanes. Their big disadvantage is the limited strength and service temperatures (only around 1000°C). To be in competition with Ni-bas superalloys, the melting point of Co-based alloys has to be enhanced. The development of Co-Re alloy with Re (which has the third highest melting point in the periodic table - 3182°C) addition aims at an enhancement of the melting point significantly above Ni-base superalloys so that the new alloys can be used at application temperatures beyond Ni-superalloys. However, strengthening has to be ensured by appropriate fine precipitates. As a promising canadidate for such phase, MC type carbides (particularly TaC) are tested.
Permanent Link: http://hdl.handle.net/11104/0217946