Publikace na Matematicko-fyzikální fakulta |
2011
Abstrakt
The subject of this article is to determine the causes of cracks and their character within the forged blades of turbine wheels of low-pressure parts in power plant. From the Cr-martensitic stainless steel forged samples of blades were prepared.
Visual inspection discovered surface cracks that were caused by drop forging. Causes of forging cracks in terms of microstructure and chemical composition were analyzed.
Also fracture surfaces of samples of damaged blades were documented and fractography analysis was performed.