Micropillar compression of single crystal tungsten carbide, part 2: Lattice rotation axis to identify deformation slip mechanisms

Tong, Vivian; Jones, Helen; Mingard, Ken

doi:10.1016/j.ijrmhm.2021.105734

Cited by 18 publications

(5 citation statements)

References 38 publications

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“…EBSD analysis of a basal pillar deformed at 600° is described in part 2 of this paper [57]. The crystal lattice near the top of the deformed pillar is within 5° of the undeformed orientation, which confirms the validity of this model.…”

Section: Author Contributionssupporting

confidence: 65%

Micropillar compression of single crystal tungsten carbide, Part 1: Temperature and orientation dependence of deformation behaviour

Jones¹,

Tong²,

Ramachandramoorthy³

et al. 2022

International Journal of Refractory Metals and Hard Materials

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Section: Author Contributionssupporting

confidence: 65%

Micropillar compression of single crystal tungsten carbide, Part 1: Temperature and orientation dependence of deformation behaviour

Jones¹,

Tong²,

Ramachandramoorthy³

et al. 2022

International Journal of Refractory Metals and Hard Materials

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“…It is well established, that the crack in cemented carbides is developed intercrystalline between WC grains and Co binder phase [22]. Cobalt is characterized by significant dislocation plasticity, while the plasticity of WC is insignificant [23]. The Co plastic deformation is inhibited due to the strain-hardening (SH) [24].…”

Section: Transverse Rupture Strength (Trs)mentioning

confidence: 99%

Effect of Cold Isostatic Pressing and VC Grain Growth Inhibitor Addition on WC Grain Size and Mechanical Properties of WC-8Co Cemented Carbide

Sheremet

2024

JMechE

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In this study, sub-micron WC-Co cemented carbides were fabricated by cold isostatic pressing using recycled WC powder, Co powder, and VC grain growth inhibitor as the initial composite powders. The raw WC-8Co and WC-8Co-0.3VC compositions were prepared according to conventional technology. After that, part of the green compacts was CIP-ed under pressure of 200 MPa. Sintering was carried out in an industrial vacuum sintering furnace at a temperature of 1420 ºC simultaneously for all samples. The microstructures and properties, including density, coercivity, transverse rupture strength, A-type Rockwell hardness and fracture toughness were investigated, characterized and compared systematically. The experimental results showed that the action of cold isostatic pressing in combination with grain growth inhibitor addition promoted ultrafine grains with the finest WC grain size of 0.68 μm and an increase in the fracture toughness up to 15.4 MPa·m1/2 ± 0.2 compared to rest cemented carbides, showing the techniquehas potential to fabricate cermets with both small average WC grain size and high fracture toughness, which is key in providing excellent performance.

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“…Values of h�i and � max for selected small error magnitudes are listed in Table 1. For other numerical estimates of h�i and � max , see Wilkinson (2001) and Tong et al (2022).…”

Section: Axis Deviations For Rotation Errors Of Given Magnitudementioning

confidence: 99%

On the magnitude of error in the determination of rotation axes

Morawiec

2024

J Appl Crystallogr

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Rotation axes (together with rotation angles) are often used to describe crystal orientations and misorientations, and they are also needed to characterize some properties of crystalline materials. Since experimental orientation data are subject to errors, the directions of the axes obtained from such data are also inaccurate. A natural question arises: given the resolution of input rotations, what is the average error of the rotation axes? Assuming that rotation data characterized by a rotation angle ω deviate from the actual data by error rotations with fixed angle δ but which are otherwise random, the average error of the rotation axes of the data is expressed analytically as a function of ω and δ. A scheme for using this formula in practical cases when rotation errors δ follow the von Mises–Fisher distribution is also described. Finally, the impact of crystal symmetry on the determination of the average errors of the axis directions is discussed. The presented results are important for assessing the reliability of rotation axes in studies where the directions of crystal rotations play a role, e.g. in identifying deformation slip mechanisms.

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Micropillar compression of single crystal tungsten carbide, part 2: Lattice rotation axis to identify deformation slip mechanisms

Cited by 18 publications

References 38 publications

Micropillar compression of single crystal tungsten carbide, Part 1: Temperature and orientation dependence of deformation behaviour

Micropillar compression of single crystal tungsten carbide, Part 1: Temperature and orientation dependence of deformation behaviour

Effect of Cold Isostatic Pressing and VC Grain Growth Inhibitor Addition on WC Grain Size and Mechanical Properties of WC-8Co Cemented Carbide

On the magnitude of error in the determination of rotation axes

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