Stress measurements in thermal loaded (Ti,Al)N hard coatings

Göbel, Th.; Menzel, S.; Hecker, M.; Brückner, W.; Wetzig, K.; Genzel, Ch.

doi:10.1016/s0257-8972(01)01102-1

Cited by 18 publications

(5 citation statements)

References 18 publications

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“…The scattering vector method has proven its ability to determine near surface residual stress gradients in a number of publications [9][10][11][12][13]. First results concerning the problem of cohesive tool damage could also be obtained [14,15].…”

Section: Determination Of Residual Stressesmentioning

confidence: 99%

Residual Stress Gradients in PVD-Coated Carbide Cutting Tools

Denkena

2006

MSF

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PVD-coated cutting tools show a typical kind of failure in use: cohesive damage, which is believed to be a result of the residual stress state of substrate and coating. As the sin2ψ-technique does not give satisfactory information on near surface residual stress trends of coated tools the scattering vector method was applied to determine residual stress depth distributions of coating and substrate. The results are presented and an attempt for an interpretation is given.

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Section: Determination Of Residual Stressesmentioning

confidence: 99%

Residual Stress Gradients in PVD-Coated Carbide Cutting Tools

Denkena

2006

MSF

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“…12b) are usual (cf. Donohue et al, 1999;Gö bel et al, 2001). Although it has often been observed that polycrystalline samples do not exhibit perfectly linear experimental sin 2 dependencies for h00 and hhh reflections, the application of the anisotropic Hill graininteraction model to assess the mechanical behaviour of such samples has generally provided satisfactory results (van Houtte & De Buyser, 1993;Gnä upel-Herold et al, 1998;Howard & Kisi, 1999).…”

Section: Elastic Strain In Thin Filmsmentioning

confidence: 99%

Elastic constants of fibre-textured thin films determined by X-ray diffraction

et al. 2009

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A new methodology is presented that allows the rapid determination of elastic constants of cubic fibre-textured thin films by X-ray diffraction. The theoretical concept is developed and tested on calculated examples of Cu and CrN films. The mechanical elastic constants are extrapolated from X-ray elastic constants by taking into consideration crystal and macroscopic elastic anisotropy. The derived algorithm enables the determination of a reflection and the corresponding value of the X-ray anisotropic factor À for which the X-ray elastic constants are equal to their mechanical counterparts in the case of fibretextured cubic polycrystalline aggregates. The approach is independent of the crystal elastic anisotropy and depends on the fibre-texture type, the texture sharpness, the number of randomly oriented crystallites and the supposed graininteraction model. In the experimental part, out-of-plane Young's moduli of 111 and 311 fibre-textured Cu and CrN thin films deposited on monocrystalline Si(100) substrates are determined. The moduli are extrapolated from thin-film experimental X-ray elastic constants that are determined by a combination of X-ray diffraction substrate curvature and sin 2 methods. For the calculation, the film macroscopic elastic anisotropy (texture) is considered. The advantage of the new technique lies in the fact that experimental moduli are determined nondestructively, using a static diffraction experiment, and represent volumeaveraged quantities.

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“…In contrast, tensile residual stresses reduce tool life and thus result in early tool failure. Residual stresses are measured by X-ray diffraction especially using the standard sin² method and the scattering vector method which provides depth-resolved residual stress information [4,5]. The spatial resolution of the radiographic residual stress measurement is limited by the diameter of the X-ray beam.…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Measurements in PVD Coatings of Carbide Cutting Tools Directly in the Cutting Edge

Breidenstein

Vogel

Dietrich

et al. 2020

DDF

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Residual stress measurements directly in the coated cutting edge are not possible with X-ray diffraction (XRD) due to the diameter of the X-ray beam. On the other hand, Raman microscopy enables measurements on the micrometer scale. Parameter variations in the PVD process were used to provide different residual stress states in (Al,Ti)N coatings on carbide cutting tools. They were examined by XRD in regions that can be reliably measured. The same area was then examined by Raman microscopy to determine the relationship of Raman peaks to the residual stress. Local high-resolution Raman measurements were then taken at the cutting edge and further influences on the Raman peak position besides residual stresses were excluded. In order to analyze the relationship between Raman peak shift and residual stress state, measurements were performed during a bending load. Finally, an outlook on further investigations is given.

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Stress measurements in thermal loaded (Ti,Al)N hard coatings

Cited by 18 publications

References 18 publications

Residual Stress Gradients in PVD-Coated Carbide Cutting Tools

Residual Stress Gradients in PVD-Coated Carbide Cutting Tools

Elastic constants of fibre-textured thin films determined by X-ray diffraction

Residual Stress Measurements in PVD Coatings of Carbide Cutting Tools Directly in the Cutting Edge

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