Cavitation erosion behavior of Cr–Mn–N stainless steels in comparison with 0Cr13Ni5Mo stainless steel

Liu, W.; Zheng, Yuan; Liu, C.S.; Yao, Zhibin; Ke, Wei

doi:10.1016/s0043-1648(03)00128-5

Cited by 68 publications

(30 citation statements)

References 13 publications

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“…For cavitation erosion the formation of strain induced martensite has been reported to be detrimental. 8) On the other hand it is reported that strain induced martensite transformation may improve solid particle erosion resistance by absorbing impact energy. Figures 7(a) and 7(b) show the cumulative weight loss (CWL) curves in AR and heat treated steels at the impact angles of 30° and 90°.…”

Section: Figures 4(a)-4(e)mentioning

confidence: 99%

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Cavitation Erosion and Solid Particle Erosion Behaviour of a Nitrogen Alloyed Austenitic Stainless Steel

et al. 2015

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The effect of grain size on solid particle erosion and cavitation erosion of a nitrogen alloyed austenitic stainless steel has been investigated. Heat treatment of the steel at elevated temperatures results in an increase in grain size and thus modification in mechanical properties. Particle erosion tests were performed using an air jet erosion tester. An ultrasonic processor with a stationary specimen was used to investigate the cavitation erosion performance. The cavitation erosion rates were found to increase with the increase in grain size. The particle erosion rate shows no significant change with increase in grain size. The worn surfaces were examined to study the characteristic damage features using scanning electron microscope (SEM). The nitrogen alloyed austenitic stainless steel exhibited superior resistance to cavitation erosion and particle erosion than a 316L stainless steel. The hardness, yield strength and ultimate tensile strength of the steels are related with the erosion resistance.

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Section: Figures 4(a)-4(e)mentioning

confidence: 99%

“…Cr-Mn-N stainless steels have potential to substitute these Cr-Ni-Mo stainless steels because of their lower cost and higher cavitation erosion resistance. 1,8) Damage concerning water turbines is caused mainly by cavitations problem, silt erosion and material defect. In presence of silt erosion, cavitation enhances the erosion damages.…”

Section: Introductionmentioning

confidence: 99%

Cavitation Erosion and Solid Particle Erosion Behaviour of a Nitrogen Alloyed Austenitic Stainless Steel

et al. 2015

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“…The specimens after 1 h of cavitation had several micropits, which were later propagated into larger pits with increasing cavitation time. AbouelKasem et al reported that pit formation is one of the characteristics of the incubation period, and the formation and development of pits are acknowledged to be a complex process [14]. In their study, pits can be divided into two types, based on their shape and origination, namely microjet-pits and shockwave-pits.…”

Section: Resultsmentioning

confidence: 99%

Sensitizing Effects of Ti Alloying Contents on Damage Behavior of Austenitic Stainless Steel Exposed to Ultrasonic Vibratory Cavitation

Lee

Kim

2016

Acta Phys. Pol. A

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The cavitation damage characteristics of austenitic stainless steel with different concentrations of Ti were investigated. The microstructure of the alloys was observed with optical microscope to identify its correlation with cavitation resistance. Hardness of the alloys was measured to examine its contribution to cavitation damage. It was found that the microstructure played a more significant role in cavitation damage behavior of austenitic stainless steel with Ti than the hardness. The findings in this study revealed that Ti addition in austenitic stainless steel may present either a beneficial or detrimental effect on cavitation damage behavior, depending on the microstructural characteristics. In particular, Ti content of 1.0% represented the most deteriorated cavitation characteristics due to the formation of relatively coarse precipitates. Therefore, control of Ti concentration is essential for marine application of austenitic stainless steel.

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“…Verifica-se também que o dano, ou seja, a deformação inicia principalmente a partir dos contornos das agulhas de martensita (Figura 8-c), porém ainda não é observado arrancamento de material. Liu, [13], verificou que a deformação plástica nos aços martensíticos é restringida pelos seus contornos quando submetidos a erosão por cavitação, o que está de acordo com estes resultados.…”

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Influência do nitrogênio na resistência à erosão por cavitação do aço inoxídavel martensítico

2018

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A adição de nitrogênio em aços inoxidáveis tem sido estudada como alternativa à produção de materiais que combinem boas propriedades mecânicas, resistência à corrosão e ao desgaste. Alguns métodos de enriquecimento de nitrogênio se respaldam em processos difusivos como nitretação a baixa e alta temperatura. Dentre estes, a nitretação seguida do Tratamento Térmico de Solubilização (NTTS), que consiste na realização de nitretação, com o objetivo de inserir o nitrogênio no material, seguido de um tratamento térmico de solubilização, que dissolve os nitretos, fazendo com que o nitrogênio se apresente em solução sólida intersticial. Neste trabalho aplicou-se o NTTS ao aço inoxidável martensítico ASTM CA-6NM. A nitretação a plasma foi realizada a uma temperatura de 630 °C por 3 horas e a solubilização em três diferentes condições (1200 °C por 30 minutos, 1200 °C por 1 hora e 1100 °C por 1 hora). As amostras foram analisadas através de difração de raios-x, microscopia ótica e medições de microdureza na região transversal da amostra. Foi verificado um aumento da dureza superficial dos aços CA-6NM, porém não foi observada a estabilização da fase austenita na região superficial mais rica em nitrogênio. O ensaio de cavitação foi realizado conforme norma ASTM G32/09, porém utilizando o método indireto, no qual a amostra não é fixada diretamente no sonotrodo. A região cavitada das amostras foi caracterizada através de microscopia eletrônica de varredura. Foi verificado que as amostras tratadas obtiveram menores taxas de erosão, e que houve diferença entre as diferentes condições de solubilização.Palavras chaves: nitretação a plasma, solubilização, SHTPN, erosão por cavitação, aço inoxidável martensí-tico. ______________________________________________________________________________________ ABSTRACTThe addition of nitrogen on stainless steels has been studied as an alternative to the production of materials which combine good mechanical properties, corrosion and wear resistance. Some nitrogen enrichment methods are supported by diffusive processes such as low and high temperatures nitriding. Among these processes, it is worth mentioning the Solution Heat Treatment after Plasma Nitriding (SHTPN), which consists in performing plasma nitriding, with the purpose of adding nitrogen to the material, followed by a solubilization heat treatment, which dissolves the nitrates, causing the nitrogen to appear in interstitial solid solution. In this paper, the SHTPN technique was applied to ASTM CA-6NM martensitic stainless steel. Plasma nitriding was performed at 630 °C for 3 hours and three different solubilization conditions were used (1200 °C for 30 minutes, 1200 °C for 1 hour e 1100 °C for 1 hour). The samples were analyzed through x-ray diffraction, optical microscopy and microhardness measurements in the transverse section of the sample. All samples had an increase in surface hardness of ASTM CA-6NM steel, and no stabilization of the austenite phase was observed in the surface area richer in nitrogen. The cavitation experiment was...

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Cavitation erosion behavior of Cr–Mn–N stainless steels in comparison with 0Cr13Ni5Mo stainless steel

Cited by 68 publications

References 13 publications

Cavitation Erosion and Solid Particle Erosion Behaviour of a Nitrogen Alloyed Austenitic Stainless Steel

Cavitation Erosion and Solid Particle Erosion Behaviour of a Nitrogen Alloyed Austenitic Stainless Steel

Sensitizing Effects of Ti Alloying Contents on Damage Behavior of Austenitic Stainless Steel Exposed to Ultrasonic Vibratory Cavitation

Influência do nitrogênio na resistência à erosão por cavitação do aço inoxídavel martensítico

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