Knoedler, R.Alstom Power Support GmbH, Mannheim (Ger...
Oxidation-resistant materials were to be identified, and fundamental investigations were to be carried out on the oxidation mechanism and chipping behaviour. The following results were obtained: 1. The new COST cast alloys CB5-CB9 with 11-12 percent Cr have very low oxidation rates. The corresponding forged alloys FB5-FB9 are similar with regard to...
In the present work, the damage development in a TBC system has been investigated under simulated service conditions. The system consisted of an atmospheric plasma sprayed, yttrium stabilized zirconium oxide; a bond coat (BC) layer of NiCoCrAlY (balance Ni, 21.1%Co, 17.1%Cr, 12.6%Al, 0.61%Y, 0.4%Hf) that also acts as a corrosion protection; and a s...
The deformation and damage behaviour of two nickel-base superalloys, CMSX-4 and SX CM186LC, have been investigated. Hot-tensile, tensile creep and low-cycle-fatigue tests have been performed on single crystal and directionally solidified variants at temperatures up to 1000 C to compare their tensile-, creep- and fatigue behaviour. The strength and ...