Abstract Maraging steels are a class of low-carbon ultra-high-strength martensitic steels. Due to their excellent weldability, these have been widely applied for laser-based additive manufacturing (AM). MAR-60HRC is newly developed maraging grade AM with nominal chemical composition 13.0Ni-15.0Co-10.0Mo-0.2Ti, Fe bal. (wt%), capable achieving hardness levels ~ 740 HV. Alternatively, 18Ni300 com...

Maraging steels are precipitation hardening alloys that can achieve an ultra-high yield strength (~3 GPa), however associated with low toughness. During exposure to high temperatures, oxidation process occurs on the surface of these steels, generally, oxides formed hematite and/or magnetite. The aim this study was investigate a maraging 13Ni15Co10Mo at annealing temperature 900 °C. bulk microst...

Abstract Maraging steel material characteristics are greatly affected by build orientation and scanning strategies during manufacturing. This research aims to examine the effect of various orientations scan on ultimate strength microhardness 18 Ni-300 grade maraging steel. The is made using a technology called direct metal laser sintering. Using Analysis Variance approach, effects processing fa...

This paper deals with the design of the welding fixture for the head end sub-assembly of a rocket motor case. The head end sub-assembly consists of four parts namely Y-Ring, Dome, Igniter Boss and the Fore skirt ring that have to be welded to each other with a specified tolerance and weld quality. The material used in the manufacture of different parts of head end sub-assembly is Maraging steel...

We report a computational 'alloy by design' approach which can significantly accelerate the design process and substantially reduce the development costs. This approach allows simultaneously optimization of alloy composition and heat treatment parameters based on the integration of thermodynamic, thermo-kinetics and a genetic algorithm optimization route. Novel steel compositions and associated...