High performance cast stainless steel, CF8C-Plus, is a low cost alloy with prospective applications
ranging from covers and casings of small and medium size gas turbines to turbocharger housing and
manifolds in internal combustion engines. Diffusion aluminide coatings were applied on this alloy as a
potential strategy for improved oxidation resistance, particularly in wet air and steam. In this paper the
performance of the aluminide coatings evaluated by cyclic oxidation experiments in air containing 10
vol.% H2O at 800?C and conventional tension-compression low-cycle-fatigue tests in air at 800?C with a strain range of 0.5% is presented. The results show that specimens coated by a chemical vapor
deposition process provide better oxidation resistance than those coated by an Al-slurry coating
process. The application of a coating by pack cementation reduced the fatigue life by 15%.
Key words: CF8C-Plus, aluminide coating, oxidation, low-cycle-fatigue behavior