Experimental Investigation of the Effect of Laser Treatment on the Resistance of a Cermet Coating to a High-Speed Impact

Fomin, V. M.; Голышев, А. А.; Маликов, А. Г.; Филиппов, А. А.; Shikalov, V. S.; Yadrenkin, M. A.; Orishich, A. M.

doi:10.1007/s10891-022-02649-x

Cited by 2 publications

(4 citation statements)

References 10 publications

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“…This considerable increase in microhardness is associated with a change in the phase composition of the remelted coating, particularly the formation of a solid solution and the synthesis of the hardening fine particles of titanium carbide [33][34][35]. Such microhardness behavior of laser-processed cermet coatings was observed in [28][29][30][31][32]. The combination of strengthening mechanisms acts in the laser processed coating in the following ways: solid solution strengthening due to β-Ti(Cr) phase formation, precipitation strengthening due to TiC particles formation and dislocation strengthening due to the thermal expansion mismatch and high cooling rates.…”

Section: Microhardnessmentioning

confidence: 95%

“…Of particular interest is the laser post-treatment of cold-sprayed cermet coatings, which allows for a significantly enhancement of their mechanical and tribological performance due to the in situ synthesis of new hardening phases [28][29][30][31][32]. Baiamonte et al [28] compared heat treatment in furnace and laser treatment of a Ti-WC cold-sprayed coating.…”

Section: Introductionmentioning

confidence: 99%

“…The change in structure and phase composition led to a growth in microhardness and elastic modulus compared to the as-sprayed coating. In our previous works [30][31][32], a combined technique of cold spray and laser post-treatment was used to produce multilayer cermet materials using powder mixtures of Ni-B 4 C, Ti-B 4 C and Ti-WC. The obtained thick deposits showed an improvement in microhardness and high-velocity impact resistance compared to the as-sprayed coatings and substrate.…”

Section: Introductionmentioning

confidence: 99%

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Microstructural Modification of Cold-Sprayed Ti-Cr3C2 Composite Coating by Laser Remelting

Shikalov,

Katanaeva,

Vidyuk

et al. 2023

J. Compos. Sci.

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Laser processing is an effective post-treatment method for modifying the structure and improving the properties of cold-sprayed coatings. In the present work, the possibility of fabricating a hard and wear-resistant Ti-based cermet coating by cold spray followed by laser remelting was studied. A mixture of titanium and chromium carbide powders in a ratio of 60/40 wt.% was deposited by cold spray onto a titanium alloy substrate, which ensured the formation of a composite coating with a residual chromium carbide content of about 12–13 wt.%. The optimal values of laser beam power (2 kW) and scanning speed (75 mm/s) leading to the qualitative fusion of the coating with the substrate with minimal porosity and absence of defects were revealed. The microstructure and phase composition of as-sprayed and remelted coatings were examined with SEM, EDS and XRD analysis. It was shown that the phase composition of the as-sprayed coating did not change compared to the feedstock mixture, while the remelted coating was transformed into a β-Ti(Cr) solid solution with uniformly distributed nonstoichiometric TiCx particles. Due to the change in microstructure and phase composition, the remelted coating was characterized by an attractive combination of higher microhardness (437 HV0.1) and lower specific wear rate (0.25 × 10−3 mm3/N × m) under dry sliding wear conditions compared to the as-sprayed coating and substrate. Laser remelting of the coating resulted in a change in the dominant wear mechanism from oxidative–abrasive to oxidative–adhesive with delamination.

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Section: Microhardnessmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructural Modification of Cold-Sprayed Ti-Cr3C2 Composite Coating by Laser Remelting

Shikalov,

Katanaeva,

Vidyuk

et al. 2023

J. Compos. Sci.

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“…Experimental investigations of the durability of the created coatings were carried out using the high-speed interaction process of a striker and a target. The acceleration of the strikers was carried out using electromagnetic mass acceleration (EDUM) [13]. The principle of EDUM is based on the generation of an electromagnetic force acting on a current-carrying object located between the currentcarrying channel walls (rails) when a current flows through the formed circuit.…”

Section: Methodsmentioning

confidence: 99%

The Use of Boron Fibers and Particles for Creating Functionally Graded Material Based on Ti64 Using the Laser Additive Manufacturing Method

2023

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This work presents a study on the additive manufacturing of functionally graded metal-ceramic materials based on Ti64 with boron fibers and particles. For the first time, the phase composition of the obtained composite was investigated using synchrotron radiation. It was shown that during laser exposure and in situ synthesis, boron dissolves in the titanium matrix, forming secondary compounds such as TiB and TiB2. An increase in the microhardness of the formed material compared to the titanium alloy was established. High-speed impact tests on the Ti64-B samples were conducted using an electrodynamic mass accelerator. It was shown that the use of boron fibers in the metallic matrix reduces the depth of the crater created during impact testing by 40% compared to the Ti64 reinforcement-free coating.

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Experimental Investigation of the Effect of Laser Treatment on the Resistance of a Cermet Coating to a High-Speed Impact

Cited by 2 publications

References 10 publications

Microstructural Modification of Cold-Sprayed Ti-Cr3C2 Composite Coating by Laser Remelting

Microstructural Modification of Cold-Sprayed Ti-Cr3C2 Composite Coating by Laser Remelting

The Use of Boron Fibers and Particles for Creating Functionally Graded Material Based on Ti64 Using the Laser Additive Manufacturing Method

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