A Review of Factors Affecting the Mechanical Properties of Maraging Steel 300 Fabricated via Laser Powder Bed Fusion

Abstract

Maraging steel is an engineering alloy which has been widely employed in metal additive manufacturing. This paper examines manufacturing and post-processing factors affecting the properties of maraging steel fabricated via laser powder bed fusion (L-PBF). It covers the review of published research findings on how powder quality feedstock, processing parameters, laser scan strategy, build orientation and heat treatment can influence the microstructure, density and porosity, defects and residual stresses developed on L-PBF maraging steel, with a focus on the maraging steel 300 alloy. This review offers an evaluation of the resulting mechanical properties of the as-built and heat-treated maraging steel 300, with a focus on anisotropic characteristics. Possible directions for further research are also identified.

Mechanical Vibration Damping and Compression Properties of a Lattice Structure

“…The stress increased continuously and steeply until it reached the limit stress, which is called compaction. The initial compaction of the cellular metamaterial upon overstress represents the onset of cell wall interactions that increase the compression resistance of the cellular solid [ 47 , 48 ].…”

Transformative Use of Additive Technology in Design and Manufacture of Hydraulic Actuator for Fly-by-Wire System

“…AM parts that were loaded in the same direction as the build orientation indicated lower fatigue strength. This effect is widely known in AM technology, and has been extensively analyzed in the literature [36][37][38][39]; however, the diagram presented in Figure 8 is the quantitative result obtained by the authors of the work in relation to the selected material and technology in which the presented actuators are made. Based on the research carried out on the strength of the AM samples, the aircraft flight control actuator was designed to achieve the highest level of safety integrity along with the greatest simplicity and lowest weight.…”

“…Based on the research carried out on the strength of the AM samples, the aircraft flight control actuator was designed to achieve the highest level of safety integrity along with the greatest simplicity and lowest weight. The architecture aims to simplify the methods of failure detection, which need to be included within the flight control computer [31][32][33][34][35][36][37][38][39][40][41][42][43]. The general schematic of the flight control actuator (FCA) is presented in Figure 9.…”

Modification of Structural Properties Using Process Parameters and Surface Treatment of Monolithic and Thin-Walled Parts Obtained by Selective Laser Melting

“…Among these, the authors consider material properties, the numerical analysis of additively manufactured parts, and case studies of specific parts. Laser powder bed fusion (L-PBF) technologies are characterized by using an energy source to melt metallic powder grains [ 2 ] where the volume of the material is constituted on melt pools which create a specific, layered structure [ 3 , 4 ]. Additively manufactured parts were used for the authors’ own research connected with static, dynamic, and fatigue behavior [ 5 , 6 , 7 , 8 ] with additional process modification [ 9 ] and heat treatment [ 10 ].…”