Results 121 to 130 of about 1,053 (210)

Extended X-ray absorption fine structure investigation of nitrogen stabilized expanded austenite

, 2010
As-delivered austenitic stainless steel and nitrogen stabilized expanded austenite, both fully nitrided and denitrided (in H2), were investigated with Cr, Fe and Ni extended X-ray absorption fine structure.
Somers, Marcel A. J., Christiansen, Thomas, Ståhl, Kenny, Oddershede, Jette   +3 more
core   +1 more source

Formation and properties of nitrided layer on 2205 duplex stainless steel by anodic plasma-nitriding assisted with hollow cathode discharge

Journal of Materials Research and Technology
2205 duplex stainless steel (2205DSS) was nitrided at 420 °C by plasma nitriding in an ammonia atmosphere under anodic potential. The nitrided layer was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The impact of the
Shuo Zhao, Liang Wang
doaj   +1 more source

Alloy Solutions for Ammonia Cracking: A Review

Materials and Corrosion, Volume 77, Issue 6, Page 923-934, June 2026.
This work provides a literature overview of the nitriding and degradation of structural materials under ammonia cracking conditions and explains the known mechanisms and the gaps, where research is required. ABSTRACT Hydrogen is a key factor in energy storage and transportation, which will inevitably lead to a substantial increase in demand.
Mathias Christian Galetz, Katharina Beck, Clara Schlereth, Ceyhun Oskay   +3 more
wiley   +1 more source

A Laser Beam Welding Process and Its Microstructural Thermoelastoplastic Analysis

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Laser beam welding has emerged as an advanced, contactless joining technique in recent years. This is primarily due to its high feed rates and low thermal distortion compared to conventional welding processes. These advantages stem from the focused energy input of the laser, enabling precise and controlled process execution.
Philipp Hartwig, Lisa Scheunemann, Jörg Schröder   +2 more
wiley   +1 more source

The Nature and Origin of "Double Expanded Austenite" in Ni-Based Ni-Ti Alloys Developing Upon Low Temperature Gaseous Nitriding

, 2015
International audienceGaseous nitriding of Ni-4 wt pct Ti alloy plates led to the development of double expanded austenite (gamma (N1) and gamma (N2)) at the surface of the nitride plates.
Fonovic, Matej, Matej Fonović, Jägle, E., Eric J. Mittemeijer, Jaegle, Eric A., Robach, O., Odile Robach, Mittemeijer, Eric J., Andreas Leineweber, Mittemeijer, E., Leineweber, A., Fonović, M., Eric A. Jägle, Robach, Odile, Leineweber, Andreas   +14 more
core   +1 more source

Effect of Postweld Heat Treatment on Laser‐Welded Duplex Stainless Steel: Crystallographic Patterns and Fatigue Behavior

steel research international, Volume 97, Issue 6, Page 3267-3281, June 2026.
Laser welding of duplex stainless steel disrupts phase balance, promotes nitride precipitation, and reduces fatigue resistance. Postweld heat treatment restores austenite and dissolves nitrides, but the resulting crystallography and phase morphology still impair fatigue performance.
Aparecida Silva Magalhães, Charles Henrique Xavier Morais Magalhães, Milton Sergio Fernandes de Lima, Leonardo Barbosa Godefroid, Flávia Braga de Oliveira, Leonardo Lagoeiro, Geraldo Lúcio de Faria   +6 more
wiley   +1 more source

Functional properties of expanded austenite generated on AISI 316L by plasma nitrocarburizing using different active screen materials

Materials Research Express
This study investigates the functional properties of the expanded austenite layers generated on AISI 316L austenitic stainless steel resulting from active screen plasma nitrocarburizing using different active screen materials, i.e. steel or solid carbon.
S M Jafarpour, M Mandel, L Krüger, H Biermann, A Dalke   +4 more
doaj   +1 more source

High Cycle Fatigue Properties of PM‐HIPed High‐Nitrogen Tool Steel: Effect of Surface Condition

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 6, Page 2097-2115, June 2026.
ABSTRACT This study explores the impact of surface condition on high‐cycle fatigue performance of a high‐nitrogen martensitic tool steel manufactured through powder metallurgy and hot isostatic pressing. In near‐net manufacturing applications, acid‐leaching pickling treatment and/or machining is used as a post‐treatment to remove the powder container ...
Faezeh Javadzadeh Kalahroudi, Dimitrios Nikas, Giulio Maistro, Mikael Grehk   +3 more
wiley   +1 more source

On the determination of stress profiles in expanded austenite by grazing incidence X-ray diffraction and successive layer removal

, 2015
Surface layers of expanded austenite resulting from nitriding typically exhibit large gradients in residual stress and composition. Evaluation of residual-stress profiles is explored by means of grazing incidence X-ray diffraction (GI-XRD), probing ...
Somers, Marcel A.J., Winther, Grethe, Somers, Marcel A. J., Fernandes, Frederico Augusto Pires, Christiansen, Thomas L., Fernandes, Frederico A.P. [UNESP]   +5 more
core   +1 more source

The Austempering Kinetics, Microstructural Development and Processing Window in the Austempered, FE-3.2C-4.8AL Compacted Graphite Cast Iron

Iranian Journal of Materials Science and Engineering, 2020
In the present study, austempering heat treatment was performed on compacted graphite aluminum cast iron with the chemical composition of 4.8%wt Al, 3.2%wt C, 0.81%wt Ni, 0.37%wt Mn, and 0.02%wt Mg.
A. Kazazi, S. M. Montazeri, S. M. A. Boutorabi   +2 more
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