Investigation of nickel alloy fan blade failure in a flue gas desulfurization unit

摘要

Highlights?The investigated blade failed after only 5years of operation instead of minimum of 20years.?Fatigue crack propagation was found and was accelerated by the presence of non-metallic inclusions and shrinkage porosity.?The crack initiations were the result of casting defects that were exposed to the surface of the blade during machining.]]>