The evolution of delta-phase in a superplastic Inconel 718 alloy

Authors: Huang, Y. and Langdon, T.G.

Journal: Journal of Materials Science

Volume: 42

Issue: 2

Pages: 421-427

eISSN: 1573-4803

ISSN: 0022-2461

DOI: 10.1007/s10853-006-0483-z

Abstract:

An Inconel 718 sheet alloy was tested in tension at a temperature of 965°C and an initial strain rate of 10-4 s-1 corresponding to the conditions for optimum superplastic deformation. Detailed observations and quantitative measurements record the evolution of the δ-phase during tensile deformation. The experiments show that the total precipitation of the δ-phase increases with strain but there is a decrease with strain in the number density of the needle/plate δ-phase particles and a corresponding increase with strain in the number density of the blocky/globular δ-phase particles. © Springer Science+Business Media, LLC 2007.

Source: Scopus