The current work was carried out to characterize welding of AISI 310 austenitic stainless steel to Inconel 657 nickel-chromium superalloy. The welds were produced using four types of filler materials; the nickel-based corresponding to Inconel 82, Inconel A, Inconel 617 and austenitic stainless steels 310. Of the two joints involved, this paper describes the choice of welding consumables for the...

This work focused on the effects of laser energy density relative density, microstructure, and microhardness Inconel 718 alloy manufactured by selective melting (SLM). The microstructural architectures, element segregation behavior in interdendritic region evolution laves phases as-SLMed IN718 samples were analyzed optical metallography (OM), scanning electron microscopy (SEM), dispersive spect...

This thesis deals with the heat evolution during solidification and its relation to the formation of porosity. It intends to improve the current understanding of the formation of porosity in cast materials with special interest in nodular cast iron and the spray forming process. Two different systems, a Fe-based alloy, Cast iron, and a Ni-based alloy, Inconel 625, are examined. The effect on th...

The influence of precipitation of intermetallics on changes in Young’s modulus of nickel and zirconium base alloys has been discussed in this paper. This study indicates that the change in the modulus due to thermal ageing in these alloys is essentially governed by the change in the modulus of the matrix due to removal of precipitation forming elements. 1.0 Introduction Mechanical properties in...

Spacer grid assembly supporting the nuclear fuel rods is an important concern in the design of structural components of a Pressurized Water Reactor (PWR). The spacer grid is composed by springs and dimples which are formed from a strip sheet by means of blanking and stamping processes. In this paper, the blanking process and tooling parameters are evaluated by means of a 2D plane-strain finite ...

Abstract High-entropy alloy, a new generation material, exhibits superior structural properties. For high-temperature applications, where dissimilar materials are in demand, HEAs may be joined with commercially available to improve their performance-life ratio. In this connection, joint was fabricated by gas tungsten arc welding between Al 0.1 CoCrFeNi-HEA and Inconel 718. The columnar dendriti...