Nanomechanical properties of thermal arc sprayed coating using continuous stiffness measurement and artificial neural network

Huen, Wai Yeong; Lee, Hyuk; Vimonsatit, Vanissorn; Mendis, Priyan; Lee, Han-Seung

doi:10.1016/j.surfcoat.2019.03.041

Cited by 14 publications

(8 citation statements)

References 55 publications

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“…Nanoindentation tester (Nano-Indentor, Agilent-XP/G200, Nano-Indentor XP, Agilent, Milpitas, CA, USA) with a load precision of 50 nN was also used to measure nano-hardness and modulus of the coatings. The continuous stiffness method (CSM) [34] was adopted to obtain displacement-hardness values from initial to final indentation depth. The average hardness was calculated by hardness-displacement curves collected at the indentation depth of 30-300 nm from six random sites.…”

Section: Coating Characterizationmentioning

confidence: 99%

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Han

et al. 2019

Metals

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To enhance the cutting performance of TiAlSiN coated cemented carbide tools by inserting Ti interlayers and to explore their mechanism, TiAlSiN/Ti multilayer coatings with different Ti thicknesses, including 0 nm, 25 nm, 50 nm, 100 nm, and 150 nm, were deposited onto cemented carbide (WC-10 wt%, Co) substrates by high power impulse magnetron sputtering (HiPIMS). The microstructure, hardness, grain orientation, residual stress, adhesion, and toughness of those coatings were measured, and the cutting performance against Inconel 718 was analyzed. Meanwhile, finite element method (FEM) indentation simulations were performed to gain detailed insight into the effects of Ti interlayer thickness on mechanical properties of TiAlSiN/Ti multilayer coatings. Results demonstrated that mechanical properties of TiAlSiN multilayer coatings were significantly changed after the Ti interlayer was introduced, and the multilayer coating #M2 with 25 nm Ti layer showed the excellent toughness and adhesion without sacrificing hardness too much. As Ti interlayer thickness increased, both toughness and adhesion decrease owing to the plastic mismatch between individual layers, and these changes were discussed detailedly with finite element method. Moreover, the result of the cutting experiment also revealed that the tool flank wear Vb can be reduced by the multilayer structure. This improvement is believed to be due to the increasing toughness, which alleviated the damage caused by the continuous impact load of hard phases generated by Inconel 718 during cutting.

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Section: Coating Characterizationmentioning

confidence: 99%

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Han

et al. 2019

Metals

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“…Investigating the coating mechanical properties is paramount to improve its performance and reliability in engineering application. In recent years, nanoindentation has been used extensively to investigate the mechanical properties of the thermal sprayed coating materials due to its ability to measure material responses at the microscale [3][4][5][6] . When coupled with statistical indentation method, nanoindentation is capable of providing insight into the mechanical behaviour of heterogeneous material such as thermal sprayed composite coating that has complex microstructures and multi-phase components interactions 4,7,8 .…”

Section: The Transversely Isotropic Behaviour Of Thermal Sprayed Alummentioning

confidence: 99%

“…Existing researches 5,21 showed that indentation measurement has implicit response parameters derived from the load and unload curve from nanoindentation which can be inter-related using the dimensional function approach based on the work by Cheng and Cheng 22 . Conventionally, the indentation modulus (M) and hardness (H) results are calculated from this force and displacement response using the popular Oliver-Pharr method 23,24 .…”

Section: Data Acquisitionmentioning

confidence: 99%

Transversely isotropic elastic-plastic properties in thermal arc sprayed Al–Zn coating: a microporomechanics approach

Huen

Lee

Vimonsatit

et al. 2020

Sci Rep

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“…Dimensional functions created using measured stiffness with indentation force and depth has been shown to relate to the material's elastic-plastic properties [23,24]. Solving these complex dimensional functions can be achieved by making an assumption about the contact condition using a reverse algorithm [21,24,25] or using an artificial-neural-network tool [26].…”

Section: Theoretical Analysismentioning

confidence: 99%

“…These relationships can be further extended to the material's elastic and plastic parameters, such as elastic modulus, yield strength, and work-hardening exponent using a dimensional-analysis approach [16,26]. Cheng and Cheng [28] proposed to relate indentation force (F) and stiffness (S) with mechanical properties using dimensional functions, as shown in Equations (4) and (5).…”

Section: Theoretical Analysismentioning

confidence: 99%

Relationship of Stiffness-Based Indentation Properties Using Continuous-Stiffness-Measurement Method

et al. 2019

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The determination of elastic modulus (E) and hardness (H) relies on the accuracy of the contact area under the indenter tip, but this parameter cannot be explicitly measured during the nanoindentation process. This work presents a new approach that can derive the elastic modulus (E) and contact depth (hc) based on measured experiment stiffness using the continuous-stiffness-measurement (CSM) method. To achieve this, an inverse algorithm is proposed by incorporating a set of stiffness-based relationship functions that are derived from combining the dimensional analysis approach and computational simulation. This proposed solution considers both the sink-in and pile-up contact profiles; therefore, it provides a more accurate solution when compared to a conventional method that only considers the sink-in contact profile. While the proposed solution is sensitive to Poisson’s ratio (ν) and the equivalent indentation conical angle (θ), it is not affected by material plasticity, including yield strength (σy) and work hardening (n) for the investigated range of 0.001 < σy/E < 0.5. The proposed stiffness-based approach can be used to consistently derive elastic modulus and hardness by using stiffness and the load-and-unload curve measured by the continuous-stiffness-measurement (CSM) method.

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Nanomechanical properties of thermal arc sprayed coating using continuous stiffness measurement and artificial neural network

Cited by 14 publications

References 55 publications

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Transversely isotropic elastic-plastic properties in thermal arc sprayed Al–Zn coating: a microporomechanics approach

Relationship of Stiffness-Based Indentation Properties Using Continuous-Stiffness-Measurement Method

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