High-accuracy reliability evaluation for the WC–Co-based cemented carbides assisted by machine learning

Guan, Zehao; Tian, Haixia; Li, Na; Long, Jianzhan; Zhang, Wei-Bin; Du, Yong

doi:10.1016/j.ceramint.2022.09.030

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…Weibull distribution is proven to confer to the feeblest-link concept [ [75] , [76] , [77] , [78] ]. For brittle materials, the literature revealed that environs, production processes, and comparative factors are well-thought-out contributing factors for reliability [ [79] , [80] , [81] , [82] ].…”

Section: Overview Of Weibull Analysis (Wa)mentioning

confidence: 99%

Weibull analysis of ceramics and related materials: A review

Osuchukwu,

Salihi,

Ibrahim

et al. 2024

Heliyon

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Section: Overview Of Weibull Analysis (Wa)mentioning

confidence: 99%

Weibull analysis of ceramics and related materials: A review

Osuchukwu,

Salihi,

Ibrahim

et al. 2024

Heliyon

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“…The machine learning algorithms based on a neural network approach modelled and investigated such materials' behaviour. It was found that reducing the grain size improves the wear resistance, and the high-temperature crack resistance might be improved by adding some rare earth, such as La [29,30].…”

Section: Mechanical Properties Of the Printed And Sintered Wc-co Spec...mentioning

confidence: 99%

The Assessment of the Transversal Rupture Strength (TRS) and Hardness of WC-Co Specimens Made via Additive Manufacturing and Sinter-HIP

Jucan

Gădălean

Chicinaş

et al. 2023

Metals

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This study is focused on the mechanical properties of WC-Co composites obtained via Selective Laser Sintering (SLS) using PA12 as a binder. The as-printed samples were thermally debonded and sintered, first in a vacuum, and then sinter-HIP (Hot Isostatic Pressure) at 1400 °C, using 50 bar Ar, which has led to relative densities up to 66%. Optical metallographic images show a microstructure consisting of WC, with an average grain size in the range of 1.4–2.0 µm, with isolated large grains, in a well-distributed Co matrix. The shrinkage of the samples was 43%, with no significant shape distortion. The printing direction of the samples significantly impacts the transversal rupture strength (TRS). Nevertheless, the mechanical strength was low, with a maximum of 612 MPa. SEM images of the fracture surface of TRS samples show the presence of defects that constitute the cause of the low measured values. The hardness values position the obtained composites in the medium coarse classical cemented carbides range. The results were also related to the amount of free Co after sintering, close to the initial one, as assessed by magnetic measurements, indicating a low degree of interaction with PA12 decomposition products.

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“…Currently, the main investigations concerning WC-based cemented carbides are focused on mechanical properties [ 12 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Study concerning their thermal properties still needs to be advanced.…”

Section: Introductionmentioning

confidence: 99%

Investigations on Thermal Conductivity of Two-Phase WC-Co-Ni Cemented Carbides through a Novel Model and Key Experiments

Wen

Jing

Long³

et al. 2023

Materials

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Excellent thermal conductivity is beneficial for the fast heat release during service of cemented carbides. Thus, thermal conductivity is a significant property of cemented carbides, considerably affecting their service life. Still, there is a lack of systematic investigation into the thermal conductivity of two-phase WC-Co-Ni cemented carbides. To remedy this situation, we integrated experiments and models to study its thermal conductivity varying the phase composition, temperature and WC grain size. To conduct the experiments, WC-Co-Ni samples with two-phase structure were designed via the CALPHAD (Calculation of Phase Diagrams) approach and then prepared via the liquid-phase sintering process. Key thermal conductivity measurements of these prepared samples were then taken via LFA (Laser Flash Analysis). As for modeling, the thermal conductivities of (Co, Ni) binder phase and WC hard phase were firstly evaluated through our previously developed models for single-phase solid solutions. Integrating the present key measurements and models, the values of ITR (Interface Thermal Resistance) between WC hard phase and (Co, Ni) binder phase were evaluated and thus the model to calculate thermal conductivity of two-phase WC-Co-Ni was established. Meanwhile, this model was verified to be reliable through comparing the model-evaluated thermal conductivities with the experimental data. Furthermore, using this developed model, the thermal conductivity of two-phase WC-Co-Ni varying with phase-fraction, temperature and grain size of WC was predicted, which can contribute to its design for obtaining desired thermal conductivities.

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High-accuracy reliability evaluation for the WC–Co-based cemented carbides assisted by machine learning

Cited by 7 publications

References 51 publications

Weibull analysis of ceramics and related materials: A review

Weibull analysis of ceramics and related materials: A review

The Assessment of the Transversal Rupture Strength (TRS) and Hardness of WC-Co Specimens Made via Additive Manufacturing and Sinter-HIP

Investigations on Thermal Conductivity of Two-Phase WC-Co-Ni Cemented Carbides through a Novel Model and Key Experiments

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