Metallurgical and mechanical characterization of nitrided low-alloy steels
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Hichem Salhi
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Mohammed El amine Djeghlal
Abstract
A series of experimental tests were carried out in this study to investigate the effect of tempering temperature on the metallurgical and mechanical properties of nitrided low-alloy steels. The low-alloy steel samples were previously subjected to tempering treatment. Phase constituents, hardness distribution, residual stresses, and growth rate of the nitrided layers are investigated using scanning electron microscopy, X-ray diffraction, Vickers microhardness, and mass spectrometry. It was found that the application of a tempering treatment at 600 °C before the nitriding process was accompanied by a high hardness and a distinct residual stress–depth profile inducing an improvement of the mechanical properties such as fatigue and wear resistances. Furthermore, to estimate the diffusion parameters and analyze their variation with the nitriding temperature, we proceeded in two steps. First, numerical simulations using the Abaqus finite element calculation code were carried out to calculate the nitrogen concentration and its diffusivity in the steel sample. Then, from these results, a mathematical approach was proposed to evaluate the diffusivity and the maximum nitrogen content.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: The raw data can be obtained on request from the corresponding author.
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Artikel in diesem Heft
- Frontmatter
- Review
- Review of functionalised clay materials for removal of bisphenol A from industrial and wastewater effluents
- Original Papers
- Unlocking treasure from fish bones: bioinspired hydroxyapatite synthesis from Catla catla fish for sustainable waste-to-wealth
- Green synthesized ZnO NPs from bamboo stem: optical, structural, morphological, and chemical studies
- Impedance and modulus spectroscopy of Bi0·5Na0·5Nb0·5Fe0·5O3 ceramic
- A novel Al-based self-lubricating hybrid composite composed of 2D-WS2, SiC, and Al2O3 for tribological applications
- Metallurgical and mechanical characterization of nitrided low-alloy steels
- Short Communication
- One-step spark plasma sintering infiltration of B4C/Al functionally graded materials
- News
- DGM – Deutsche Gesellschaft für Materialkunde
