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| Naji, M. |
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| Azevedo, Nuno Monteiro |
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Wendler, Marco
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Topics
Publications (7/7 displayed)
- 2024Hydrogen Diffusion in Deformed Austenitic TRIP Steel—A Study of Mathematical Prediction and Experimental Validationcitations
- 2024The Effect of Bake Hardening on Quenched and Partitioned AISI 420 Stainless Steel
- 2023Hydrogen Embrittlement in a Plasma Tungsten Inert Gas‐Welded Austenitic CrMnNi Stainless Steelcitations
- 2023Enhancing the cavitation erosion resistance of AISI 420-type stainless steel with quenching and partitioningcitations
- 2022Quenching and partitioning (Q&P) processing of a (C+N)-containing austenitic stainless steelcitations
- 2021Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steelcitations
- 2019Influence of Temperature and Strain Rate during Thermomechanical Treatment of a Metastable Austenitic TRIP Steel Compacted by SPS/FASTcitations
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article
Enhancing the cavitation erosion resistance of AISI 420-type stainless steel with quenching and partitioning
Abstract
Stainless steels are commonly used in hydraulic components where they may be sus-ceptible to cavitation erosion. In this study the cavitation erosion resistance of AISI 420-type stainless steel is examined after quenching and partitioning (Q&P) heat treatment. Q&P-samples were prepared with varying heat treatment parameters, and their initial properties were examined with X-ray diffraction and hardness measurements. Reference samples were also prepared with quenching and tempering and quenching without parti-tioning. The samples were eroded for 6 h with an ultrasonic cavitation erosion device, and their mass losses were measured. The eroded areas were examined with scanning electron microscopy, optical profilometry, and magnetic induction measurements. The results suggest that the cavitation erosion resistance of the examined stainless steel can be significantly enhanced with Q&P. This enhancement of cavitation erosion resistance results from high initial hardness and retained austenite fraction of the steel. During cavi-tation erosion the retained austenite can absorb cavitation bubble collapse energy by transforming into strain induced martensite, which increases the hardness of the steel and generates expansion of the lattice. This expansion additionally hinders crack propa-gation at grain boundaries, which reduces the formation of initial cavitation damage.