Dynamic Recrystallization Simulation of PH13-8Mo Stainless Steel by Cellular Automata Method Based on Laasraoui-Jonas Dislocation Density Model.

The Gleeble-1500 hot simulation experimental equipment was used to investigate the effects of hot simulation compression on PH13-8Mo stainless steel with strain rates ranging from 0.1 to 10 s and deformation temperatures ranging from 900 to 1150 °C. The stress-strain charts for each deformation condition clearly show the characteristics of dynamic recrystallization behavior.

Biaxial tensile behavior of stainless steel 316L manufactured by selective laser melting.

In this study, miniaturized cruciform biaxial tensile specimens were optimized by finite element simulation software Ansys to vary five geometric parameters. The optimized specimens were utilized to characterize the biaxial tensile properties of 316L stainless steel fabricated through selective laser melting (SLM), with the two loading directions being vertical (X) and parallel (Y) to the building direction. It was discovered that at load ratios of 4:2 and 2:4, the yield strengths along X and Y orientations reached their respective maxima.

Integrated Laser Additive Manufacturing of α-AlO Nanoparticle-Seeded β/γ' Ni-Al Intermetallic Alloy with Enhanced High-Temperature Oxidation Performance.

The oxidation of β-NiAl at high temperatures leads to the preferential formation of metastable alumina, such as θ-AlO, which exhibits a significantly faster growth rate compared to stable α-AlO. However, our recent research has shown that through the use of the surface-dispersing nanoparticles (NPs) of metal oxides with a hexagonal closed pack (hcp), such as α-AlO, the thermal growth of α-AlO can be facilitated. The present study employed laser additive manufacturing (LAM) to develop an integrated α-AlO NPs surface-seeded two-phase intermetallic alloy comprising brittle β-NiAl and tougher γ'-NiAl, which demonstrated better comprehensive mechanical properties.

Influence of Build Angle and Polishing Roughness on Corrosion Resistance of 316L Stainless Steel Fabricated by SLM Method.

Metal parts formed by laser additive manufacturing methods usually have large surface roughness, which affects the corrosion resistance of the parts. This study reported the reason for and mechanism of the large surface roughness of 316L stainless steel samples manufactured by selective laser melting (SLM) at different build angles. Through the study, the reason for the large top surface roughness (average surface roughness is 15.