O. Covarrubias, O. Elizarraras, Frisa Aerospace SA de CV, Santa Catarina, Mexico
Alloy 909 (UNS N19909) is a Ni-Fe-Co alloy used for jet-engine components manufacture due to its low thermal expansion properties and high-strength at elevated temperatures. Mechanical testing shall be performed for tensile, hardness and stress-rupture capabilities in order to fulfill requirements; this properties can be affected by manufacturing parameters like hot-working conditions and heat treatment procedures. This job summarizes evaluation of effects on mechancial properties of alloy 909 when several rings, made by forging procedures, are exposed to different forging and heat-treatment parameters on industrial conditions.
Summary: Aerospace components made from alloy 909 are subjected to mechanical and microstructural testing to validate requirements.
Several seamless rings were forged and heat-treated considering selected parameters. Exhaustive testing was performed to determine alloy behavior.
Generated information was used to improve method of manufacture of alloy 909 components; since its implementation no metallurgical deviation is reported.
