Thermal and mechanical cyclic tests and fracture mechanics parameters as indicators of thermal shock resistance – case study on silica refractories

Andreev, Kirill; Tadaion, V.; Zhu, Qing; Wang, W.; Yin, Yansheng; Tonnesen, Thorsten

doi:10.1016/j.jeurceramsoc.2018.12.062

Cited by 36 publications

(20 citation statements)

References 20 publications

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“…Thus, the corrosion progress must be detectable with the RFDA. There are several previous attempts to examine whether this monitoring of processes such as sintering [6], phase transitions [7,8], thermoshock and fatigue [9,10], effects of additives [11,12] or corrosion [13][14][15] with aid of the RFDA is possible. Previous studies could not explain the measured frequency change with known corrosion phenomena.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements

Reichert¹,

Niessen²,

Leto

et al. 2020

Ceramics

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Corrosion is one of the most common wear mechanisms of refractories. Corrosive attacks lead to chemical and microstructural changes. Hot corrosion compromises chemical and/or physical interactions. Thus, the process is complex and not yet fully understood. Currently, corrosion is investigated post mortem by means of X-ray diffraction or scanning electron microscopy. These methods have the drawback that some information is lost on cooling. In-situ measurements, however, take measurements within the process. In resonant frequency and damping analysis (RFDA), a sample is excited to vibrate by a mechanical impulse. The vibrating sample emits an acoustic signal. This is recorded with a microphone and evaluated by means of Fast Fourier Transformation (FFT). We measured the change of the frequency of a low cement castable during the corrosion process. Further simplified experiments with less complex materials were done to confirm the results. Distinctive points of the curves could be correlated to specific corrosion phenomena, like melting or infiltration. The applied methods include a first characterization of the material with open porosity, density and in-situ high-temperature (HT)-RFDA measurements as well as a study of the slag behavior.

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Section: Introductionmentioning

confidence: 99%

Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements

Reichert¹,

Niessen²,

Leto

et al. 2020

Ceramics

View full text Add to dashboard Cite

show abstract

“…A cyclic mechanical test is a promising method to investigate the fatigue degradation and fracture mechanism of refractories . For quasi‐brittle materials, there are different strategies to perform the cyclic test, such as constant strain limits, constant stress limits, increasing maximum strain and constant strain . Thereinto, the constant strain approach is more suitable for the refractories because they are often subjected to thermal expansion‐induced mechanical loads.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the crack propagation resistance and fracture behavior of magnesia refractories were investigated using a graphical method and digital image correlation technique (DIC) . For improving the refractory life and simulating the failure of refractory under service condition, the overall influence of thermal and mechanical loads on the performance of refractory ceramics was studied . Chlup et al compared the fracture toughness of as‐received and water quenched cordierite‐mullite refractory using monotonic mechanical test.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14] For quasi-brittle materials, there are different strategies to perform the cyclic test, such as constant strain limits, constant stress limits, increasing maximum strain and constant strain. 15,16 Thereinto, the constant strain approach is more suitable for the refractories because they are often subjected to thermal expansion-induced mechanical loads. Fatigue resistance is influenced by applied strain amplitude.…”

Section: Introductionmentioning

confidence: 99%

“…11 For improving the refractory life and simulating the failure of refractory under service condition, the overall influence of thermal and mechanical loads on the performance of refractory ceramics was studied. 16,[22][23][24] Chlup et al 22 compared the fracture toughness of as-received and water quenched cordierite-mullite refractory using monotonic mechanical test. Andreev et al 16 investigated the fracture mechanics parameters of silica refractories using the monotonic test, repetitive thermal shock test and cyclic fatigue test and discussed the validity to use the achieved results as an indicator of thermal shock resistance.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fracture behavior of magnesia refractory materials under combined cyclic thermal shock and mechanical loading conditions

Dai

Jin

et al. 2019

J Am Ceram Soc

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To investigate the effect of cyclic thermal shock and mechanical loading on the fracture behavior of magnesia refractories showing different brittleness, the as‐received and cyclic thermally shocked specimens are subjected to monotonic and cyclic wedge splitting test. The whole duration of test is monitored by digital image correlation and acoustic emission. Both thermal and mechanical fatigue resistance increase with the reduction of brittleness. Repetitive thermal shock results in pronounced reduction of strength. However, the specific fracture energy and nonlinearity increase after exposure to thermal shock due to the expanded micro‐crack network inducing the development of a significant fracture process zone. Periodic loading mainly leads to the decrease of strain bearing capacity, as the fatigue loads favor the extension of crack tip instead of fracture process zone expansion. The combined application of periodic thermal shock and mechanical loads gives a new insight into the progressive damage behavior of refractory under critical conditions.

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Computer Simulation of the Effect of Steel Ladle Secondary Lining Layers on Localization and Direction of Thermal Crack Propagation

Grigoriev,

Danilchenko,

Dmitriev

et al. 2023

Refract Ind Ceram

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Thermal and mechanical cyclic tests and fracture mechanics parameters as indicators of thermal shock resistance – case study on silica refractories

Cited by 36 publications

References 20 publications

Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements

Correlation of Thermo-Elastic Material and Corrosion Behavior of Refractory Castables by In-Situ Measurements

Fracture behavior of magnesia refractory materials under combined cyclic thermal shock and mechanical loading conditions

Computer Simulation of the Effect of Steel Ladle Secondary Lining Layers on Localization and Direction of Thermal Crack Propagation

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