Manufacturing oxide-dispersion-strengthened steels using the advanced directed energy deposition process of high-speed laser cladding

Abstract

In this work, we demonstrate the feasibility of manufacturing an iron-based oxide-dispersion-strengthened (ODS) PM2000 composite material with the chemical composition of Fe20Cr4.5Al0.5Ti + 0.5Y2O3 (in wt.%) via the advanced directed energy deposition (DED) process of high-speed laser cladding (HSLC). The characteristic high solidification rates of HSLC processes allow the successful dispersion of nano-scaled yttrium-based oxides in the ferritic stainless steel matrix. The effective suppression of nano-particle agglomeration during the melting stage, which is frequently observed in conventional DED processes of ODS materials, is reflected by smaller dispersoid sizes and corresponding higher hardness of manufactured specimen compared to DED-manufactured counterparts.

Laser cladding powder flow field detection system based on ISR optimization algorithm

“…This method effectively discouraged nanoparticle aggregation during the melting stage. Compared with similar materials, the sample produced has a smaller dispersion size and correspondingly higher hardness [17].…”

Green nanoparticle synthesis at scale: a perspective on overcoming the limits of pulsed laser ablation in liquids for high-throughput production

“…Nanoparticles, with sizes typically ranging from 1 to 100 nanometers, exhibit unique electronic, optical, and mechanical properties that differ from their bulk counterparts. Applications of NPs stretch from drug delivery and contrast agents for magnetic resonance in the biomedical field, [3][4][5][6] catalysts for the development of renewable energy systems and environment remediation, [7][8][9][10] for the photoand electrocatalytic application, 11 such as the water-splitting process, 12 fabrication of solar nanofluids, 13 properties enhancement and smart materials printing by additive manufacturing, 14,15 to the development of food packaging with antibacterial effects in the food industry. [16][17][18] The broad application spectrum that nanotechnology has reached during the last decades has been possible due to the unique physicochemical properties of the NP compared to bulk materials.…”

Using the Radial Shear Rolling Method for Fast and Deep Processing Technology of a Steel Ingot Cast Structure

“…Nickel can be replaced by particulate, fine dispersed inclusions such as oxides or carbides. As reinforcing and stabilizing elements, yttrium oxide (Y 2 O 3 ) particles are most effective [15,16]. This is the main dispersion strengthened (ODS) steel idea.…”