摘要
The precipitation behavior in Inconel 718 and modified alloys has been studied by means of TEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob- tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com- pact morphology of γ″+γ′ has the best structure stability at higher temperatures.Instead of the transformation γ″→δ in alloy 718 the dissolution of strengthening phases in modified alloy leads material degradation.
The precipitation behavior in Inconel 718 and modified alloys has been studied by means of TEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob- tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com- pact morphology of γ″+γ′ has the best structure stability at higher temperatures.Instead of the transformation γ″→δ in alloy 718 the dissolution of strengthening phases in modified alloy leads material degradation.
