Microstructure, mechanical properties, and strain rate sensitivity of vacuum arc melted CoCrNi medium entropy alloy

Deshmukh, Poonam S.; Sathiaraj, G. Dan

doi:10.1016/j.matpr.2023.02.015

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…In addition, higher TiC content resulted in wear-prone areas due to uneven TiC distribution; at a 873 K temperature, the actual wear area temperature was lower than the phase-stable TiC temperature, which improved wear resistance. In addition, plasma sintering [24], vacuum arc melting [25] and stir friction welding [26] have been used to manufacture high-performance CoCrNi alloys. Meanwhile, most works have focused so far on the preparation of single CoCrNi coatings or CoCrNi alloys under varying process parameters, while there are relatively few studies on introducing the second phase into CoCrNi to prepare metal-ceramic composite coatings and improve their properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of CoCrNi/Nano-TiC/Micro-TiB2 Composite Coatings Prepared via Laser Cladding

Liu,

Yu,

Wang

et al. 2023

Materials

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Laser cladding was used to prepare CoCrNi-xTiC-xTiB2 (x = 0, 5, 15 wt.%) composite coatings on 316L stainless steel. Then, ceramic mass fraction effects on the microstructure and properties were investigated. Results show viable metallurgical bonding between the coating and the substrate, with no apparent pores or cracks. The addition of ceramics transformed the coating phase from a single-phase face-centered cubic (FCC) to a multi-phase FCC+TiC+TiB2. TiC and TiB2 increased the hardness of the CoCrNi-xTiC-xTiB2 coating from 209.71 HV to 494.77 HV by grain refinement and diffusion strengthening. The substrate wear loss was 0.0088 g, whereas the CoCrNi-xTiC-xTiB2 (x = 15%) coating wear loss was only 0.0012 g. Moreover, the overall wear mechanism of the coating was changed: the substrate wear mechanism was used for abrasive wear, adhesive wear and fatigue wear, and the coating with the addition of 15 wt.% nano-TiC and 15 wt.% micro-TiB2 was the wear mechanism for pitting fatigue wear.

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Section: Introductionmentioning

confidence: 99%