9 Dokumente gefunden

Soft X-ray imaging with coherence tomography in the water window spectral range using high-harmonic generation

Abstract High-harmonic generation (HHG) is used as a source for various imaging applications in the extreme ultraviolet spectral range. It offers spatially coherent radiation and unique elemental contrast with the potential for attosecond time resolution. The unfavorable efficiency scaling to higher…
London: Nature Publishing Grou, 2026-01-22

Tracing the Formation of Femtosecond Laser-Induced Periodic Surface Structures (LIPSS) by Implanted Markers

The generation of laser-induced periodic surface structures (LIPSS) using femtosecond lasers facilitates the engineering of material surfaces with tailored functional properties. Numerous aspects of their complex formation process are still under debate, despite intensive theoretical and experimental…
Washington, DC: Soc., 2024-12-27

Crystalline Microstructure, Microsegregations, and Mechanical Properties of Inconel 718 Alloy Samples Processed in Electromagnetic…

The solidification of Inconel 718 alloy (IN718) from undercooled liquid is studied. The solidification kinetics is evaluated in melted and undercooled droplets processed using the electromagnetic levitation (EML) technique by the temperature–time profiles and solid/liquid (S/L) interface movement during…
Basel: MDPI, 2024-02-29

Thermodynamically Guided Improvement of Fe–Mn–Al–Ni Shape‐Memory Alloys

A microstructural informed thermodynamic model is utilized to tailor the pseudoelastic performance of a series of Fe–Mn–Al–Ni shape‐memory alloys. Following this approach, the influence of the stability and the amount of the B 2‐ordered precipitates on the stability of the austenitic state and the pseudoelastic…
Weinheim: Wiley-VCH, 2024-02-01

Effect of Co vs. Fe content on early stages of oxidation of Co-Cr-Fe-Mn-Ni-Si complex concentrated alloys at 800 °C

The effect of Co vs. Fe content on early stages of oxidation in air was studied in Co-Cr-Fe-Mn-Ni-Si complex concentrated alloys (CCAs). A higher Co content decreased the phase fraction of protective corundum-type oxide as determined quantitatively. This is consistent with presented thermodynamic calculations,…

Formation of laser-induced periodic surface structures on Zr-based bulk metallic glasses with different chemical composition

Bulk metallic glasses (BMG) are amorphous metal alloys known for their unique physical and mechanical properties. In the present study, the formation of femtosecond (fs) laser-induced periodic surface structures (LIPSS) on the Zr-based BMGs Zr46Cu46Al8, Zr61Cu25Al12Ti2, Zr52.5Cu17.9Al10Ni14.6Ti5 (Vit105)…

Modelling of the Solidifying Microstructure of Inconel 718: Quasi-Binary Approximation

aus: Modelling
The prediction of the equilibrium and metastable morphologies during the solidification of Ni-based superalloys on the mesoscopic scale can be performed using phase-field modeling. In the present paper, we apply the phase-field model to simulate the evolution of solidification microstructures depending…
Basel: MDPI, 2023-06-22

Formation of Nanoscale Al 2 O 3 Protective Layer by Preheating Treatment for Improving Corrosion Resistance of Dilute Fe-Al…

aus: Materials
In this work, an attempt was made to improve the corrosion resistance of dilute Fe-Al alloys (1.0 mass% Al) by preheating treatment at 1073 K in H 2 atmosphere. In comparison with pure Fe and unpreheated Fe-Al alloys, the resistance to oxidation at 673 K in pure O 2 and to electrochemical corrosion in…
Basel: MDPI, 2022-11-11