Type-I Hot Corrosion of Ni-Base Superalloy CM247LC in Presence of Molten Na2SO4 Film

Kumawat, Mahesh K.; Parlikar, Chandrakant; Alam, Md. Zafir; Das, Dipak K.

doi:10.1007/s11661-020-06068-6

Cited by 17 publications

(2 citation statements)

References 43 publications

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“…According to Fick's law, the main models of oxidation of metals and alloys describe a diffusion-controlled process. [28,29] The oxidation reactions occur either by the diffusion of metal ions towards the surface to react with oxygen or by the diffusion of oxygen ions through the oxide layer to react with metal ions at the metal/oxide interface. [30] As the oxide layer growth continues with time, the diffusing species take a longer time to reach the surface or the metal/oxide interface, progressively slowing down the oxidation process.…”

Section: Resultsmentioning

confidence: 99%

Oxidation Behavior of the Skutterudite Material Yb0.2Co4Sb12

Drevet

Aranda

Nugent

et al. 2021

Metall Mater Trans A

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Resultsmentioning

confidence: 99%

Oxidation Behavior of the Skutterudite Material Yb0.2Co4Sb12

Drevet

Aranda

Nugent

et al. 2021

Metall Mater Trans A

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“…The CM247LC superalloy’s Type-I hot corrosion behaviour is assessed at 950°C in the air against low (3 to 4), intermediate (7 to 9), and high (12 to 14 mg cm−2) Na2SO4 deposits. The temperature exposure ranges from five minutes to a thousand hours [ 11 ]. When the deformation temperature is lower than 800°C, it is discovered that the alloy’s yield strength only varies within a narrow range with temperature.…”

Section: Introductionmentioning

confidence: 99%

Tensile strength analysis of additively manufactured CM 247LC alloy specimen by employing machine learning classifiers

Jatti,

Sawant,

Khedkar

et al. 2024

PLoS ONE

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Using a cutting-edge net-shape manufacturing technique called Additive Layer Manufacturing (ALM), highly complex components that are not achievable with conventional wrought and cast methods can be produced. As a result, the aerospace sector is paying closer attention to using this technology to fabricate superalloys based on nickel to develop the holistic gas turbine. Because of this, there is an increasing need for the mechanical characterisation of such material. Conventional mechanical testing is hampered by the limited availability of material that has been processed, especially given the large number of process factors that need to be assessed. Thus, the present study focuses on manufacturing CM247LC Ni-based superalloy with exceptional mechanical characteristics by laser powder bed fusion (L-PBF). This study evaluates the effect of input process variables such as laser power, scan speed, hatch distance and volumetric energy density on the mechanical performance of the LPBF CM247LC superalloy. The maximum value of as-built tensile strength obtained in the study is 997.81 MPa. Plotting Pearson’s heatmap and the Feature importance (F-test) was used in the data analysis to examine the impact of input parameters on tensile strength. The accuracy of the tensile strength data classification by machine learning algorithms, such as k-nearest neighbours, Naïve Baiyes, Support vector machine, XGBoost, AdaBoost, Decision tree, Random forest, and logistic regression algorithms, was 92.5%, 83.75%, 83%, 85%, 87.5%, 90%, 91.25%, and 77.5%, respectively.

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