Exceptional cavitation erosion-corrosion behavior of dual-phase bimodal structure in austenitic stainless steel

Selvam, Karthikeyan; Saini, Jaskaran Singh; Perumal, G.; Ayyagari, Aditya; Salloom, Riyadh; Mondal, Riya; Grewal, Harpreet Singh; Arora, Harpreet Singh

doi:10.1016/j.triboint.2019.01.018

Cited by 40 publications

(10 citation statements)

References 51 publications

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“…Thus, the higher tool rotational speed of 1800 rpm resulted in highly refined sub-micrometer grain structure with a significant fraction (∼54%) of nanograins. Besides this, the SFP_1800 sample shows three contributions to the average grain size, of which two peaks indicate two major contributions owing to the formation of bimodal grain microstructure as evident from earlier studies as well . The calculations for grain size distribution and misorientation angle determination were performed using TSL OIM Analysis 8.0 software.…”

Section: Results and Discussionmentioning

confidence: 94%

“…Besides this, the SFP_1800 sample shows three contributions to the average grain size, of which two peaks indicate two major contributions owing to the formation of bimodal grain microstructure as evident from earlier studies as well. 21 The calculations for grain size distribution and misorientation angle determination were performed using TSL OIM Analysis 8.0 software. The fraction of high angle grain boundaries (HAGBs, θ > 15°) is reduced from nearly 87% for the as-cast sample to ∼82% and 66% for the SFP_400 and SFP_1800 samples, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

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Enhanced Oxidation Resistance of Ultrafine-Grain Microstructure AlCoCrFeNi High Entropy Alloy

et al. 2022

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This work investigates the effect of ultrafine-grain microstructure on the oxidation behavior of AlCoCrFeNi high entropy alloy (HEA). The ultrafine-grain microstructure is obtained using stationary friction processing performed at two different rotational speeds, 400 and 1800 rpm, for 5 min duration. Processed samples demonstrate high depth of refinement (DOR) and ultrafine grain size (0.43–1 μm) at high rotational speeds along with significant phase transformations from BCC/B2 to FCC microstructure. Further, surface free energy of the ultrafine-grain microstructure is enhanced up to 35%. Oxidation kinetics of the ultrafine-grained sample is decelerated up to 12–48% in a temperature range of 850–1050 °C for a duration of 100 h. Chromia and alumina were the predominant oxides formed in almost all the samples oxidized at elevated temperature. In addition, spinel Co(Cr,Fe) 2 O 4 /Fe(Co,Cr) 2 O 4 formation is also detected in the unprocessed oxidized samples. Processed samples rich in grain boundaries (GBs) promote internal oxidation to form Al-rich inner oxides. The enhanced oxidation resistance of the processed samples is attributed to the microstructural refinement and homogenization resulting in the formation of protective chromia followed by Al-rich inner oxides.

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Section: Results and Discussionmentioning

confidence: 94%

Section: Results and Discussionmentioning

confidence: 99%

Enhanced Oxidation Resistance of Ultrafine-Grain Microstructure AlCoCrFeNi High Entropy Alloy

et al. 2022

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“…Nair et al 62 revealed that grain refinement can improve the hardness and yield strength and then improve the cavitation resistance. Dong et al 63 reported that plasticity and toughness also played a vital role in cavitation behaviour, and previous research 64 has proved that the combination of austenite and martensite is beneficial to improve the cavitation resistance.…”

Section: Ce Mechanismmentioning

confidence: 99%

Iso-material manufacturing of 304 stainless steel: Microstructure, corrosion-cavitation erosion synergistic behaviour

Cao,

Wu,

Wang

et al. 2024

Materials Science and Technology

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Different from additive or subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) was proposed in this work by laser surface melting (LSM), aiming at enhancing resistance to corrosion and cavitation erosion (CE) of 304 stainless steel. Experimental results showed that partial austenite transformed into martensite after LSM. The corrosion resistance of LSMed sample was improved. LSMed sample exhibited enhanced CE resistance, and was 2.5 and 2 times that of untreated sample in deionised water and 3.5 wt% NaCl solution, respectively. The passivation film for LSMed sample exhibited a high re-passive and self-repairing ability of passivation film. LSMed sample in this study exhibits a high or comparable corrosion and CE resistance in comparison with samples prepared by other fabrication method reported previously.

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“…In Figure 7a, every cavitation cycle displays a pronounced and swift positive alteration in potential precisely at the onset of the cavitation process. In of Ecorr and icorr vs. time in a period of cavitation/stagnant for Ni/Nano SiC composite coating and the substrate in 3.5 wt% NaCl [84] Selvam et al [85] reported a single-step processing technique to create a bimodal grain structure in stainless steel, as displayed in Figure 8. Bimodal steel showcased a remarkably robust resistance to degradation, exhibiting a nearly sevenfold increase in resistance compared to the original as-received steel.…”

Section: Surface Corrosionmentioning

confidence: 99%

The Effect of Ultrasonic Cavitation on Surficial Properties of Metals and Industrial Processes

Zheng,

Mathe

2023

Advanced Materials Science and Technology

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Ultrasonic cavitation is a phenomenon that occurs when high-frequency sound waves are introduced into a liquid medium, causing the formation and collapse of small bubbles within the liquid. These bubbles generate high-energy shock waves that can change the surface of nearby materials, leading to various physical and chemical effects. In this review, we briefly summarized the influence of ultrasonic cavitation on the surficial properties of metals and some industrial processes, particularly focusing on the effects of surface roughness, surface cleaning, and surface activation/modification and surface corrosion.

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Exceptional cavitation erosion-corrosion behavior of dual-phase bimodal structure in austenitic stainless steel

Cited by 40 publications

References 51 publications

Enhanced Oxidation Resistance of Ultrafine-Grain Microstructure AlCoCrFeNi High Entropy Alloy

Enhanced Oxidation Resistance of Ultrafine-Grain Microstructure AlCoCrFeNi High Entropy Alloy

Iso-material manufacturing of 304 stainless steel: Microstructure, corrosion-cavitation erosion synergistic behaviour

The Effect of Ultrasonic Cavitation on Surficial Properties of Metals and Industrial Processes

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