Investigation of indentation-, impact- and scratch-induced mechanically affected zones in a copper single crystal

Juran, Pierre; Liotier, Pierre‐Jacques; Maurice, Claire; Valiorgue, Frédéric; Kermouche, Guillaume

doi:10.1016/j.crme.2015.03.003

Cited by 9 publications

(3 citation statements)

References 54 publications

(81 reference statements)

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“…The dents are square in shape, as previously observed numerically by Casals and Forest [ 47 ] for spherical indentation and experimentally by Juran et al [ 50 ] for spherical indentation and impact, as a result of crystal plasticity anisotropy. Figure 21 shows a comparison of the dent topography profile along a horizontal path for the three impact conditions.…”

Section: Applicationssupporting

confidence: 75%

Controlled single and repeated impact testing for material plastic behaviour characterisation under high strain rates

Breumier

Trudeau-Lalonde²,

Lafrance³

et al. 2021

Strain

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Instrumented single‐shot experiments provide crucial information of a material's response to impact events that can be used in shot‐peening modelling. However, no authors successfully used such test for constitutive model identification and validation as existing test rig generally cannot provide an accurate determination of the shot trajectory in three dimensions over a wide velocity range. In this work, a shot‐peening test rig that can propel single shot under the process conditions with a high aiming accuracy is presented. The test rig propels industrial shot by sudden pressurised gas release. A methodology to recover the propelled shot three‐dimensional trajectory within a 200‐μm accuracy using two high‐frequency cameras is developed in an open‐source in‐house code. The test rig can propel 0.5‐, 1.19‐ and 2.5‐mm‐diameter shot at velocity ranging from 0.8 to 143 m s−1 and can send several shots at the same position when using the largest shot diameter. Two potential applications of the set‐up are presented for (i) coefficient of restitution measurement with different shooting angles and velocities and (ii) crystal plasticity finite element model validation using the impact dent topology, the shot displacement curve and the crystal misorientation field under the dent.

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Section: Applicationssupporting

confidence: 75%

Controlled single and repeated impact testing for material plastic behaviour characterisation under high strain rates

Breumier

Trudeau-Lalonde²,

Lafrance³

et al. 2021

Strain

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“…The maximum displacement into the sample was 500 nm with a strain rate of 0.05 s -1 and the distance between any two neighbouring indents was at least 15 µm. This distance was chosen to avoid possible influence of stress field caused by the neighbouring indentation [28]. A number of distances ranging from 5 to 1000 µm below the treated surface were chosen in order to investigate the gradient properties.…”

Section: Nanoindentation Testsmentioning

confidence: 99%

Characterization of gradient properties generated by SMAT for a biomedical grade 316L stainless steel

Guelorget

Sun

et al. 2019

Materials Characterization

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“…Note that the distance between indentations (15 mm) is higher than three times the characteristic length of the residual imprints (≤4 mm) to avoid perturbations due to the mechanically affected zone of adjacent tests ( Fig. 5b and c) [25]. An indentation force of 10 mN permits the investigation of several positions in the TTS region without interfering with adjacent measurements.…”

Section: Nano-indentation Testingmentioning

confidence: 99%

Assessment of mechanical property gradients after impact-based surface treatment: application to pure α-iron

Tumbajoy-Spinel

Descartes

Bergheau

et al. 2016

Materials Science and Engineering: A

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Mechanical surface treatments are known for their ability to improve material resistance to abrasive wear and local fatigue crack microstructure of the home-made crack propagation. These treatments are based on repeated contact loadings which create large plastic strains in the near-surface that can induce a local grain refinement. In this case, a significant increase in the near-surface local mechanical properties is thus usually observed. In this paper, nano-mechanical tests are used to quantify the mechanical property gradient in the near-surface of a purity-controlled α-iron after an impact-based treatment. A methodology based on the combination of two different techniques is proposed: nano-indentation and in-situ micro-pillar compression. The resulting in-depth mechanical properties gradient is compared to the average grain size measured by EBSD. A positive relationship with the well-known Hall-Petch effect is observed.

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Investigation of indentation-, impact- and scratch-induced mechanically affected zones in a copper single crystal

Cited by 9 publications

References 54 publications

Controlled single and repeated impact testing for material plastic behaviour characterisation under high strain rates

Controlled single and repeated impact testing for material plastic behaviour characterisation under high strain rates

Characterization of gradient properties generated by SMAT for a biomedical grade 316L stainless steel

Assessment of mechanical property gradients after impact-based surface treatment: application to pure α-iron

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