Determination of residual stress gradient in a Ti-stabilized austenitic stainless steel cladding candidate after carburization in liquid sodium at 500 °C and 600 °C

Slim, Mohamed Fares; Géandier, Guillaume; Rouillard, Fabien; Malard, B.

doi:10.1016/j.actamat.2021.117435

Cited by 7 publications

(7 citation statements)

References 45 publications

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“…35 In another attempt, Slim and co-workers studied the residual stress profile of Ti-stabilized austenitic stainless steel cladding dependent on the carburization resulting in a zonewise residual stress profile. 37 Here, in the present work, the nature of the residual stress is somewhat different from the earlier works on AZO 14,40 by our group, which could be because of the change in microstructural behavior occurring with different growth conditions at low sputtering power. The crystallite sizes of MZO and AZO single layers and their multilayers are estimated using the Scherrer formula, as described in ref 40, and it is noticeable that with the increasing deposition time, crystallite size increases marginally for both MZO and AZO (see Figure 2f).…”

Section: Resultscontrasting

confidence: 79%

“…Interestingly, in all these samples, the compressive nature of residual stresses is observed for lower tilt angles covering a few atomic layers, and at the higher tilt angles, the behavior of the residual stress gets modified to the tensile one, which is suggestive of the existence of the residual stress gradient in the samples. These types of studies play a vital role in examining the mechanical properties of materials like ductility, upon being subjected to different conditions such as the introduction of the residual stress profiles related to the gradient of the compositions in the matrix and the insertion of new phases. − Surprisingly, the behavior of the residual stress is different for the five-layer system with AZO, as depicted in Figure e. Here, although the gradient of the residual stresses is present for samples A2 and AaA, it almost disappears in sample AaAaA and becomes purely compressive in nature, which is ascribed to varying dopant contents associated with the change in the dopant intake and ease of adjustment to the host crystal structure corresponding to different dopants. , Thus, sample AaAaA is likely to show good mechanical stability from the intuitive analogy of microstructural analysis in AZO/AgNP/AZO structures presented in ref .…”

Section: Resultsmentioning

confidence: 97%

“…The existence of such residual stress gradient is common in metallurgy, and in one such work, Ricardo et al reported a similar kind of variation in residual stress against tilt angles and proposed the presence of such nonlinear peculiar behavior arising from the nonhomogeneity in the microstructure or composition ascribed to the presence of two phasesa highly textured phase and a polycrystalline one . In another attempt, Slim and co-workers studied the residual stress profile of Ti-stabilized austenitic stainless steel cladding dependent on the carburization resulting in a zone-wise residual stress profile . Here, in the present work, the nature of the residual stress is somewhat different from the earlier works on AZO , by our group, which could be because of the change in microstructural behavior occurring with different growth conditions at low sputtering power.…”

Section: Resultsmentioning

confidence: 97%

See 2 more Smart Citations

Vibrational Property-Driven NIR Transparency in X:ZnO (X = Mo, Al) Multilayer Transparent Electrodes for Self-Powered Flexible Optoelectronics

Barman,

Borah,

Changmai

et al. 2024

ACS Appl. Electron. Mater.

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In the direction of harnessing the benefit of untapped IR solar radiation, this work highlights the essence of developing Vis-NIR transparent conducting electrodes (TCEs) based on X:ZnO (X = Mo, Al) with embedded Al. The origin of NIR transparency is explained through a comparative study in MZO-and AZO-based frameworks, synthesized by magnetron sputtering operated at relatively low sputtering power, aiming at the application in optoelectronic devices as top-illuminating electrodes. A different type of microstructural array is proposed for obtaining better transparency in multilayered transparent conducting oxides (TCOs) with embedded metal nanostructures. The cutoff wavelength of the transparent window obtained experimentally is mainly explained by vibrational properties in terms of phonon modes derived from theoretical calculations involving first-principles density functional theory (DFT) as well as Raman studies. Also, the mechanical stability is tested and discussed based on strain delocalization. Finally, a device application of the developed TCOs is demonstrated with an emerging S-scheme heterojunction having the potential for self-powered optoelectronics, along with the mechanical flexibilities of the device and the TCE.

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Section: Resultscontrasting

confidence: 79%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 97%

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Vibrational Property-Driven NIR Transparency in X:ZnO (X = Mo, Al) Multilayer Transparent Electrodes for Self-Powered Flexible Optoelectronics

Barman,

Borah,

Changmai

et al. 2024

ACS Appl. Electron. Mater.

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“…The 2D detector to sample distance ( D = 1.5 m) and the detector tilts were calibrated using a cerium dioxide powder diffraction standard from NIST (CeO 2 – SRM 674b) and the pyFAI software suite . A similar setup has been used in refs and .…”

Section: Methodsmentioning

confidence: 99%

Reliability Investigation of Silicide-Based Thermoelectric Modules

Mejri,

Romanjek,

Mouko

et al. 2024

ACS Appl. Mater. Interfaces

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The reliability and failure mechanisms of silicide-based thermoelectric modules (n-type Mg 2 (Si,Sn)/p-type HMS) were investigated thanks to two types of thermal tests with either a fixed or a cycling thermal gradient, under different atmospheres. The hot interfaces of the thermoelectric modules were analyzed by scanning electron microscopy and X-ray diffraction after the reliability tests. The current thermoelectric modules do not exhibit any failure mechanism under ambient air for a hot side temperature of 250 °C for tests conducted either during 500 h at a fixed temperature gradient or after 1000 thermal cycles. However, when the temperature was increased to 350 °C, pesting phenomena were detected at the hot side of the n-type Mg 2 (Si,Sn) legs caused by the decomposition/oxidation of the material. These phenomena are strongly slowed down for thermoelectric modules tested under a primary vacuum, highlighting the predominant role of oxygen in the degradation mechanism. Interdiffusion phenomena are the most pronounced at the interface of the hot side of the n-type thermoelectric materials. The formation of a MgO layer, which is an electrical and thermal insulator, has decreased the thermoelectric modules' performances. For thermal cycling tests, cracks are observed on the hot side of the n-type legs. The presence of these cracks drastically increases the thermal and electrical resistances, leading to an overheating of the system and limiting its efficiency and failure by breaking electrical continuity. The interfaces at the hot side temperature of the p-type HMS legs remained intact whatever the test conditions were, indicating a high chemical stability and a good mechanical strength.

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“…Similar procedures have been used in similar studies on other beamlines, for example, in [26][27][28].…”

Section: Hexrd-sin 2 ψmentioning

confidence: 99%

Strains and Stresses in Multilayered Materials Determined Using High-Energy X-ray Diffraction

Geandier,

Adenis,

Selezneff

et al. 2024

Metals

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This work explores the advantages and disadvantages of a methodology using high-energy X-ray diffraction to determine residual stresses in multilayer structures produced by atmospheric plasma spraying. These structures comprise a titanium alloy substrate (Ti64), a bonding layer (Ni-Al), and an abrasive coating (Al2O3). This study focuses on analyzing the residual stress gradients within these layers. The presented method is used to determine stresses across the entire thickness of multilayer structures. Experiments were carried out using a high-energy rectangular beam, operating in transmission mode, on the cross-section of the sample. The results indicate variable stresses throughout the depth of the sample, particularly near the layer interfaces. The semi-automatic methodology presented here enables us to follow stress evolution within the different layers, providing indications of the load transfer between them and at their interfaces. The sin2ψ method was used to analyze the diffraction data and to determine the stresses in each phase along the sample depth. However, interpreting results near the interfaces is complex due to the geometric and chemical effects. We present a discussion of the main advantages and disadvantages of the methodology for this kind of industrial sample.

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Determination of residual stress gradient in a Ti-stabilized austenitic stainless steel cladding candidate after carburization in liquid sodium at 500 °C and 600 °C

Cited by 7 publications

References 45 publications

Vibrational Property-Driven NIR Transparency in X:ZnO (X = Mo, Al) Multilayer Transparent Electrodes for Self-Powered Flexible Optoelectronics

Vibrational Property-Driven NIR Transparency in X:ZnO (X = Mo, Al) Multilayer Transparent Electrodes for Self-Powered Flexible Optoelectronics

Reliability Investigation of Silicide-Based Thermoelectric Modules

Strains and Stresses in Multilayered Materials Determined Using High-Energy X-ray Diffraction

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