High-temperature mechanical properties of WC-Co hard metals (Review)

Новиков, Н. В.; Бондаренко, В. П.; Golovchan, V. T.

doi:10.3103/s1063457607050012

Cited by 16 publications

(8 citation statements)

References 14 publications

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“…Volume fraction of the main component calculation. In cemented carbide, the volume fraction of each phase can directly influence its mechanical properties 28 and, therefore, the volume fraction is used as the main parameter for modeling. Because the cemented carbide is opaque, it cannot directly observe the composition and the three-dimensional spatial distribution of the phases.…”

Section: Determination Of the Microscopic Parameters Of The Yt5 Cemented Carbide Toolmentioning

confidence: 99%

Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hardness is a critical mechanical property of cutting tools, which significantly affects the cutting performance and wear resistance. Therefore, it is of great significance to obtain the hardness of the tool surface accurately. This paper presents a method based on finite element method (FEM) for studying the hardness of carbide tools. The microstructure of the carbide tool is obtained by scanning electron microscope(SEM). Combined with stereo principle, and secondary treatment, a three-dimensional multi-crystal model of carbide tool and indentation is established, and the model and hardness value obtained by different calculation methods are verified by microhardness test. The results show that the real hardness of the cemented carbide tool can be obtained by the indentation FEM model. The hardness values of cemented carbide tools are then calculated by the traditional method, Oliver-Pharr (OP) method and indentation method, respectively. It is found that the hardness value of the traditional method is the largest and fluctuates greatly, while the hardness values calculated by the OP method and indentation method are similar, and the fluctuation range of the hardness value calculated by the OP method is larger. In conclusion, the hardness calculated by the indentation work method is the best.

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Section: Determination Of the Microscopic Parameters Of The Yt5 Cemented Carbide Toolmentioning

confidence: 99%

Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The mechanical properties of WC-based cermets, including hardness and thermomechanical fatigue at high temperatures, are primarily determined by the carbide phase [ 27 ]. Hence, various methods have been suggested to produce a nearly fully dense WC-based cermet suitable for extreme environments.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Mechanical Characterization of Colloidal Processed WC/(W5Vol%Ni) via Spark Plasma Sintering

Zegai,

Besharatloo,

Ortega

et al. 2023

Materials

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This study investigates the sintering behaviour and properties of WC-based composites in which WC was mixed with W5vol%Ni in concentrations of 10vol% and 20vol%. Colloidal processing in water and spark plasma sintering were employed to disperse the WC particles and facilitate sintering. The addition of W5vol%Ni improved the sintering process, as evident from a lower onset temperature of shrinkage determined through dilatometric studies. All samples exhibited the formation of tungsten monocarbide (W2C), with a more pronounced presence in the WC/20(W5vol%Ni) composite. Sintering reached its maximum rate at 1550 °C and was completed at 1600 °C, resulting in a final density exceeding 99.8%. X-ray diffraction analysis confirmed the detection of WC and W2C phases after sintering. The observed WC content was higher than expected, which may be attributed to carbon diffusion during the process. Macro-scale mechanical characterisations revealed that the WC/10(W5vol%Ni) composite exhibited a hardness of 18.9 GPa, while the WC/20(W5vol%Ni) composite demonstrated a hardness of 18.3 GPa. Increasing the W5vol%Ni binder content caused a decrease in mechanical properties due to the formation of W2C phases. This study provides valuable insights into the sintering behavior and properties of WC/W5vol%Ni composites, offering potential applications in extreme environments.

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“…Fatigue damage therefore is considered as an important theme in researchers and structural engineering since applied loading increases in cumulative manner and this eventually leads to material failure. Its increment with number of connected stacking cycles in an aggregate waymay lead to break and eventually failure of the considered portion therefore consideration of selection and design of mechanical properties [1]should have a most reasonable hardness value. In this manner, fatigue life optimization and mechanisms approach has an extraordinary significance that should be considered during design and planning process of mechanical parts bearing a load [2].…”

Section: Introductionmentioning

confidence: 99%

“…Without a doubt changes in the intrinsic material properties is broadly connected owing to linear damage run (LDR) [1], [5] and this seems to have a few main disadvantages that require to be considered [2]- [4]. Besides, a few metallic materials exhibited nonlinear fatigue damage and harmfull advancement which strongly is based on the load dependent and is completely dismissed by direct harm rule [7].The key presumption of Miner run is to show and consider fatigue strain mechanisms as whereas number of studies exhibitedsequence reliance under load amplitude conditions [8].…”

Section: Introductionmentioning

confidence: 99%

A Review on Fatigue Mechanisms and Approaches for Hard metals

Moses

2022

IJSMS

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In this study, fatigue lifemechanisms and approaches for hard metals commonly known as cemented carbides that are supported by literature are reviewed on development of fatigue life technology methods. The hard metals materials are mainly used in engineering systems and failure due to fatigue is common phenomenon in engineering materials.The fatigue crack growth therefore plays very important role towards fatigue failure mechanisms and this remains a setback to engineering fraternity as far as usage of these hard metals are concerned. The fatigue process occurs when a material is subjected to fluctuating stress and strain, this may lead to failure when it accumulates loading due to cumulative damage, multiaxial and variable loading. The Crack initiation growth and micro-mechanisms of damage during fatigue growth with optimization of fatigue life technology approaches and fracture growth resistance are main focus of this review article. Thee review of this paper is based on fatigue life mechanisms adoption methodsfor hard metals with novelty of Crack Tip opening displacement technologyand its implementation in various systems will ought to assist technologists in extraordinary broad programs.In conclusion cumulative damage, fatigue mechanisms, multiaxial amplitude loading and fatigue crack growth mechanics techniques are important andan appropriate fatigue life technology mechanisms methods. Eventually these review article will give potential information on fatigue life technology adoption methods and this helps future researcher and technologists to consider the fatigue life models and these ideas will impact on future application of fatigue life failure mechanisms.

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High-temperature mechanical properties of WC-Co hard metals (Review)

Cited by 16 publications

References 14 publications

Investigation on hardness testing of cemented carbide tool based on finite element method

Investigation on hardness testing of cemented carbide tool based on finite element method

Microstructural and Mechanical Characterization of Colloidal Processed WC/(W5Vol%Ni) via Spark Plasma Sintering

A Review on Fatigue Mechanisms and Approaches for Hard metals

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