A review on ductile mode cutting of brittle materials

Antwi, Elijah Kwabena; Liu, Kui; Wang, Hao

doi:10.1007/s11465-018-0504-z

Cited by 90 publications

(24 citation statements)

References 100 publications

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“…Several researchers, since the late 1950s, have investigated the ductile SPE behaviour of materials. Finnie [53] was the first to model the mechanism, on the basis of the cutting of the surface by the impacting particles. Biswas et al [54] experimentally investigated the response of mild steel and aluminium surfaces, to SPE using angular silicon carbide (SiC) particles with radius 60 µm.…”

Section: Ductile Solid Particles Erosion (Spe) Mechanismmentioning

confidence: 99%

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

et al. 2020

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Gas turbines (GTEs) are often utilised in harsh environments where the GT components, including compressor vanes and rotor blades, are subject to erosion damage by sand and dust particles. For instance, in a desert environment, the rate of damage made by solid particles erosion (SPE) becomes severe, and therefore results in degradation to the GTE parts, lowering the cycle efficiency, reducing the device lifetime, and increasing the overall cost of the operation. As such, understanding the erosion mechanism caused by solid particles and the effects associated with it is crucial for selecting the appropriate countermeasures and maintaining the system performance. This review paper provides a survey of the available studies on SPE effects on GTEs and surface protective coatings. Firstly, the ductile and brittle SPE mechanism is presented, as well as the ductile-brittle transition region. Then, an in-depth focus on the parameters associated with the SPE, such as particles properties and impingement conditions, is introduced. Furthermore, the existing theoretical models are shown and discussed. Afterwards, erosion resistant coating materials for surface protection and their selection criteria are covered in the review. Finally, the gap in knowledge and future research direction in the field of SPE on GTEs are provided.

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Section: Ductile Solid Particles Erosion (Spe) Mechanismmentioning

confidence: 99%

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

et al. 2020

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“…Researchers have concluded that there is plastic deformation in the micro-nano machining process of brittle materials, such that machined surface damage will be avoided and high surface quality can be achieved [26][27][28][29]. The most widely adopted model to explain brittle material deformation is that developed by Lawn et al [30], shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior Investigation of 4H-SiC Single Crystal at the Micro–Nano Scale

Chai

et al. 2020

Micromachines

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In this paper, theoretical models of the critical indentation depth and critical force on brittle materials using cleavage strength and contact theory are proposed. A Berkovich indenter is adopted for nanoindentation tests on a 4H-SiC single crystal sample to evaluate its mechanical behaviors. The stages of brittle material deformation (elastic, plastic, and brittle) can be characterized by the load versus indentation depth curves through the nanoindentation test. The curve of the elastic deformation stage follows the Hertz contact theory, and plastic deformation occurs at an indentation depth of up to 10 nm. The mechanism of 4H-SiC single crystal cracking is discussed, and the critical indentation depth and critical force for the plastic-brittle transition are obtained through the occurrence of the pop-in point. This shows that the theoretical results have good coherence with the test results. Both the values of the elastic modulus and hardness decrease as the crack length increases. In order to obtain more accurate mechanical property values in the nanoindentation test for brittle materials such as SiC, GaN, and sapphire, an appropriate load that avoids surface cracks should be adopted.

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“…For ceramics, SiC was studied [12][13][14] intensely; but also, elemental Si was investigated repeatedly [3,9,[15][16][17] as a prototypical example of a brittle material, even if it is not a ceramic in the strict sense of the word. Several studies found that, in the nanoscale, these materials behave in a ductile way; this phenomenon was termed the "brittleductile transition" since seemingly brittle materials change their behavior and show ductile features [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Cutting of Al/Si bilayer systems: molecular dynamics study of twinning, phase transformation, and cracking

Vardanyan

Zhang

Alhafez

et al. 2020

Int J Adv Manuf Technol

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Using the molecular dynamics simulation, we study the cutting of Al/Si bilayer systems. While the plasticity of metals is dominated by dislocation activity, the deformation behavior of Si crystals is governed by phase transformations-here to the amorphous phase. We find that twinning adds as a major deformation mechanism in the cutting of Al crystals. Cutting of Si crystals requires thrust forces that are larger than the cutting forces in order to induce amorphization; in metals, the thrust forces are relatively smaller than the cutting forces. When putting an Al top layer on a Si substrate, the thrust force is reduced; the opposite effect is observed if a Si top layer is put on an Al substrate. Covering an Al substrate with a thin Si top layer has the detrimental effect that the hard Si requires high pressures for cutting; as a consequence, twinning planes with intersecting directions are generated that ultimately lead to cracks in the ductile Al substrate. The crystallinity of the Si chip is strongly changed if an Al substrate is put under the Si top layer: With decreasing thickness of the Si top layer, the Si chip retains a higher degree of crystallinity.

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A review on ductile mode cutting of brittle materials

Cited by 90 publications

References 100 publications

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

Mechanical Behavior Investigation of 4H-SiC Single Crystal at the Micro–Nano Scale

Cutting of Al/Si bilayer systems: molecular dynamics study of twinning, phase transformation, and cracking

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