Comparative Microstructural study of Inconel 625 used to turbochargers

Abstract

Inconel 625 alloy is a nickel-based superalloy that is widely used in important engineering applications, such as in the manufacture of specific parts for the turbine engines of some automobiles and aircraft [1]. These applications are due in part, to the fact that Inconel 625 resists temperatures ranging from cryogenic to temperatures approaching 1200°C [2], because of its matrix remaining austenitic (face-centered cubic structure which is the predominant phase in Ni base alloys) [3], from solidification to absolute zero, and its weld consumables which offer some properties in the weld state that no other family of superalloys can offer [4].