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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Turk, Christoph
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Topics
Publications (18/18 displayed)
- 2024Effect of intercritical annealing on the microstructure and mechanical properties of a PH 13-8 Mo maraging steelcitations
- 2024Multiscale in-situ observations of the micro- and nanostructure of a PH 13-8 Mo maraging steel during austenitizationcitations
- 2022Optimization of the post-process heat treatment strategy for a Near-α Titanium base alloy produced by laser powder bed fusioncitations
- 2022Potential Causes for Cracking of a Laser Powder Bed Fused Carbon-free FeCoMo Alloycitations
- 2022Cracking mechanism in a laser powder bed fused cold-work tool steelcitations
- 2022Cracking mechanism in a laser powder bed fused cold-work tool steel: The role of residual stresses, microstructure and local elemental concentrationscitations
- 2022Local microstructural evolution and the role of residual stresses in the phase stability of a laser powder bed fused cold-work tool steelcitations
- 2022Local microstructural evolution and the role of residual stresses in the phase stability of a laser powder bed fused cold-work tool steelcitations
- 2022Microstructure Evolution of a New Precipitation-Strengthened Fe–Al–Ni–Ti Alloy down to Atomic Scalecitations
- 2022Formation and evolution of precipitates in an additively manufactured near-α titanium base alloycitations
- 2022Processability and cracking behaviour of novel high-alloyed tool steels processed by laser powder bed fusioncitations
- 2021Atom Probe Tomography of the Oxide Layer of an Austenitic Stainless CrMnN-Steelcitations
- 2021Influence of thermomechanical fatigue loading conditions on the nanostructure of secondary hardening steelscitations
- 2020Defects in a laser powder bed fused tool steelcitations
- 2020Determination of Martensite Start Temperature of High‐Speed Steels Based on Thermodynamic Calculationscitations
- 2019Microstructural evolution of a dual hardening steel during heat treatmentcitations
- 2019Thermomechanical fatigue testing of dual hardening tool steelscitations
- 2015Boron grain boundary segregation in a heat treatable steelcitations
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article
Effect of intercritical annealing on the microstructure and mechanical properties of a PH 13-8 Mo maraging steel
Abstract
One method of achieving exceptional ductility and toughness of PH 13-8 Mo maraging steels is to perform agingat high temperatures or for prolonged dwell times, which is referred to as overaging. The increase in ductility andtoughness is primarily related to the formation of high amounts of reverted austenite during aging. An alternativeapproach to elevate the reverted austenite content is to perform intercritical annealing, i.e., annealing in the dualphase field of martensite and austenite, prior to aging. Due to partitioning of substitutional elements duringintercritical annealing, the freshly formed martensite is enriched in Ni after cooling. As a result, the formation ofreverted austenite is facilitated, and high phase fractions can be achieved even at moderate aging temperatures.This study aims to shed light on the full potential of implementing intercritical annealing in the heat treatmentroute of PH 13-8 Mo maraging steels by thoroughly investigating the effect of this heat treatment adaption on themicrostructure, mechanical properties and austenite stability. Overall, it is demonstrated that the addition ofintercritical annealing enables to achieve a well-balanced microstructure showing a promising combination ofstrength, ductility and toughness. By performing intercritical annealing for shorter dwell times, high revertedaustenite contents comparable to those after overaging can be reached. Resulting from a moderate aging temperature,fine β-NiAl precipitates, which were detected by atom probe tomography, are formed withinmartensite, leading to considerably higher strength compared to after overaging. However, the high matrixstrength restricts the mechanically induced transformation of reverted austenite to martensite, as found by in-situhigh-energy X-ray diffraction tensile tests.