Correlation between structure and mechanical properties in a-quartz single crystal by nanoindentation, AFM and confocal Raman microscopy

Article Materials Science, Multidisciplinary

Evaluation of nanomechanical and nanoscratch response of Inconel 718 reinforced with graphene nanoplates produced by combined ARB-GTAW processes

E. Ahmadi et al.

Summary: This study attempted to produce graphene reinforced Inconel 718 composite by combining accumulative roll bonding (ARB) and gas tungsten arc welding (GTAW). The phase composition analysis and wear behavior of the composite were investigated, and the microstructure characterization was studied using various techniques. The results showed that integrating ARB with GTAW can result in a superalloy-based composite with enhanced tribological behavior due to the formation of carbides and carbonitrides from graphene nanoplates (GNPs). The elastic modulus and hardness obtained from nanoindentation were used to assess the yield stress and flow behavior parameters.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2023)

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Article Chemistry, Physical

Nanoindentation of single-crystal and polycrystalline yttria-stabilized zirconia: A comparative study by experiments and molecular dynamics simulations

Jianli Zhou et al.

Summary: The mechanical properties and deformation behaviors of single-crystal and polycrystalline yttria-stabilized zirconia (YSZ) were studied using nanoindentation experiments and molecular dynamics (MD) simulations. Differences in Young's moduli and deformation mechanisms between the two types of YSZ were observed, with single-crystal YSZ exhibiting a larger modulus and different deformation mechanism compared to polycrystalline YSZ. The mechanical properties of YSZ were found to be independent of temperature but significantly affected by the number of YSZ grains, with both Young's modulus and hardness of polycrystalline YSZ decreasing as the number of grains increased.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Engineering, Electrical & Electronic