Analytical Electron Microscopy Studies of the CMSX-4 Single Crystal Superalloy Subjected to High Temperature Annealing

Dubiel, B.; Indyka, Paulina; Kalemba–Rec, Izabela; Moskalewicz, T.

doi:10.12693/aphyspola.131.1375

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…The use of qualitative studies of the Ni-based superalloy microstructure is a well-established approach. The two-phase structure of the CMSX-4 single-crystal nickel-based superalloy has been identified by microscopy and X-ray diffraction in many works, e.g., [19][20][21]. The microstructure of the material in its as-cast state is composed of gamma (γ) and gamma prime (γ ) phases as well as γ/γ' eutectics as microstructural constituents.…”

Section: Methodsmentioning

confidence: 99%

Methodology for Revealing the Phases and Microstructural Constituents of the CMSX-4 Nickel-Based Superalloy Implicating Their Computer-Aided Detection for Image Analysis

Reichel

2020

Materials

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The paper presents the findings of a research on the selection of methodology for revealing the microstructure in metallographic investigations on the example of the single-crystalline CMSX-4 nickel-based superalloy. A set of chemical and electrochemical methods of etching has been selected. The metallographic specimens from the analyzed material have been treated with the etchants. After every etching procedure, microphotographs of the microstructure were taken by means of an optical microscope and a scanning electron microscope. Both useful and disadvantageous effects of etching with the respective etchants have been displayed. The etchant application for a qualitative and quantitative analysis has been considered on the basis of the enclosed microphotographs. As a result, examples of a computer-aided detection of the phases and microstructural constituents present in the analyzed CMSX-4 alloy for the selected revealing methodologies have been demonstrated. The described investigations enable a better understanding of the essence of the selection of the microstructure revealing methodology and its influence on the obtained results.

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Section: Methodsmentioning

confidence: 99%

Methodology for Revealing the Phases and Microstructural Constituents of the CMSX-4 Nickel-Based Superalloy Implicating Their Computer-Aided Detection for Image Analysis

Reichel

2020

Materials

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“…[1,2] Its microstructure in the annealed state consists of cuboidal precipitates of c¢ phase (Ni 3 Al-based), coherent with a c solid solution matrix. [3,4] Turbine blades are subjected to high loads at high temperatures during operation; they must possess good structural quality and high strength. Laser shock peening (LSP) is an innovative surface treatment which can be used in the power generation industry to improve the fatigue life of the components.…”

Section: Introductionmentioning

confidence: 99%

The Microstructure and Properties of Laser Shock Peened CMSX4 Superalloy

Rozmus-Górnikowska

Kusiński

Cieniek

et al. 2021

Metall Mater Trans A

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The influence of laser shock peening on the surface morphology and microstructure of single-crystal CMSX4 nickel-based superalloy was investigated by optical profilometry and atomic force microscopy, scanning and transmission electron microscopy as well as scanning-transmission electron microscopy in high-angle annular dark-field mode. Maps of chemical elements distribution in the laser-affected areas were determined using energy-dispersive X-ray spectroscopy. Furthermore, after the LSP, nanohardness tests were conducted on the cross section of the treated samples as well as the untreated material. Laser shock peening caused an ablation and melting of the surface layer and hence enlarged the surface roughness. Beneath the surface, in the laser shock-peened areas, severe distortion of the regular $$ {\gamma \mathord{\left/ {\vphantom {\gamma {\gamma^{\prime}}}} \right. \kern-0pt} {\gamma^{\prime}}} $$ γ / γ ′ microstructure was observed. In the surface layer, down to about 15 μm, shear bands of localized deformation were formed. Moreover, the result showed that the average nano-hardness value was obviously increased in the laser-treated region.

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Analysis of combined static load and low temperature hot corrosion induced cracking in CMSX-4 at 550°C

et al. 2020

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Analytical Electron Microscopy Studies of the CMSX-4 Single Crystal Superalloy Subjected to High Temperature Annealing

Cited by 3 publications

References 17 publications

Methodology for Revealing the Phases and Microstructural Constituents of the CMSX-4 Nickel-Based Superalloy Implicating Their Computer-Aided Detection for Image Analysis

Methodology for Revealing the Phases and Microstructural Constituents of the CMSX-4 Nickel-Based Superalloy Implicating Their Computer-Aided Detection for Image Analysis

The Microstructure and Properties of Laser Shock Peened CMSX4 Superalloy

Analysis of combined static load and low temperature hot corrosion induced cracking in CMSX-4 at 550°C

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