Ultrasonic cavitation erosion of a duplex treated 16MnCr5 steel
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Ion Mitelea
, Cristian Ghera , Ilare Bordeaşu and Corneliu M. Crăciunescu
Abstract
Ultrasonic cavitation experiments using a piezoceramic-based apparatus, according to ASTM G32-2010, were performed on heat and thermochemically treated Cr – Mn low alloyed steel samples. The microstructure in annealed, carburized and tempered states as well as following a duplex treatment (carburized, surface induction hardening and tempering) was analyzed before and after the cavitation erosion tests. The results show the advantage of the duplex treatment, with a significant increase of up to 20 times of the cavitation erosion resistance compared to the annealed state and reveal that the main mechanism for surface deterioration is micro-cracking. The observations are important for the improvement of the behaviour for parts used in hydraulic equipment, for which the volume hardening following the carburization can be replaced by cost-efficient surface induction hardening treatments.
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Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Microstructural evolution in a Ti – Ta high-temperature shape memory alloy during creep
- Microstructural changes in quasicrystalline Al–Mn–Be–Cu alloy after various heat treatments
- Sulfur solubility of liquid and solid Fe–Cr alloys: A thermodynamic analysis
- Thermophysical properties of solid phase ruthenium measured by the pulse calorimetry technique over a wide temperature range
- Electrochemical characteristics of nanocrystalline and amorphous Mg–Y–Ni-based Mg2Ni-type alloys prepared by mechanical milling
- Metallurgical characteristics and machining performance of nanostructured TNN-coated tungsten carbide tool
- Ultrasonic cavitation erosion of a duplex treated 16MnCr5 steel
- Electrocapacitance of hybrid film based on graphene oxide reduced by ascorbic acid
- Influence of fabrication parameters on the nanostructure of Si-NWs under HF/Fe(NO3)3 etching system
- Template assisted synthesis of poly(3-hexylthiophene) nanorods and nanotubes: growth mechanism and corresponding band gap
- Short Communications
- Fabrication and microstructure of nano-SiC/Ni composite coatings on diamond surface via electro-co-deposition
- A comparative study on the friction and wear properties of semi-solid cast A356 alloy
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- DGM News
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