Thickness dependence of viscoelastic stress relaxation of laminated microbeams due to mismatch strain

Cai, Xiaosheng; Zhang, Neng-Hui; Liu, Hanlin

doi:10.1007/s10483-022-2841-5

Cited by 1 publication

(1 citation statement)

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“…Moreover, the overlying layer in contact with the aggressive environment must have increased strength and hardness. Consequently, the chosen "architecture" provides high mechanical and functional properties to the composite material [15,[21][22][23][24]. As a functional layer in a composite material, we chose a high-entropy material.…”

Section: Introductionmentioning

confidence: 99%

Development and Research of New Hybrid Composites in Order to Increase Reliability and Durability of Structural Elements

Rusinov

Blednova

Rusinova

et al. 2023

Metals

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Hybrid composite materials can successfully solve the problems of reliability, durability, and extended functionality of products, components, and details, which operate under conditions of multifactorial influences (temperature, force, and deformation). The authors have developed a hybrid composite high-entropy AlCoCrCuFeNi material and ceramic cBNCoMo(B4CCoMo) layer. The formation of hybrid composites was carried out using new technology. This technology includes high-energy machining, high-velocity oxygen-fuel spraying in a protective environment, high-temperature thermomechanical treatment, and heat treatment. The use of the developed technology made it possible to increase the adhesive strength of the composite layers from 68 to 192 MPa. The authors performed an assessment of the structural parameters of the composite layers. The assessment showed that the composite layers had a nanocrystalline structure. The research included mechanical tests of the hybrid composites Hastelloy X (NiCrFeMo)—AlCoCrCuFeNi—cBNCoMo and Hastelloy X (NiCrFeMo)—AlCoCrCuFeNi—B4CCoMo for cyclic durability (fatigue mechanical tests) and friction wear. The use of surface-layered materials AlCoCrCuFeNi—cBNCoMo and AlCoCrCuFeNi—B4CCoMo in the composition of hybrid composites significantly increased cyclic durability. The use of surface-layered materials in the composition of hybrid composites made it possible to reduce wear intensity. The test results show that the developed composites are promising for use in various industries (including oil and gas), where high strength and wear resistance of materials are required.

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