Superplastic behaviour of Inconel718 sheet

Authors: Huang, Y.

Journal: Materials Science and Technology

Volume: 16

Issue: 11-12

Pages: 1309-1313

ISSN: 0267-0836

DOI: 10.1179/026708300101507154

Abstract:

Inconel 718 is a nickel based alloy used extensively in the aerospace industry, having good service capabilities, in terms of strength and fatigue resistance, at high temperatures. Inconel 718, in the form of sheet, has the capability of being shaped using gas pressure forming techniques similar to those used for a number of aluminium and titanium based alloys. An extensive research programme has been carried out to investigate the high temperature formability of this alloy. This has involved both uniaxial tensile testing to determine such parameters as flow stress and strain rate sensitivity, and microstructural examination to investigate grain stability under both static heating and following deformation. The forming characteristics of the material have been correlated with the 5 phase solvus temneratiirn determined iisinp SEM tcchniaucs. Ontimum formine tcmoeraturcs and strain ratps are discussed. © 2000 IoM Communications Ltd.

Source: Scopus