Characterization of Nanostructured and Ultrafine-Grain Aluminum-Silicon Claddings using the Nanoimpact Indentation Technique

Arreguín-Zavala, J.; Milligan, J.; Davies, M. I.; Goodes, Stephen R.; Brochu, Mathieu

doi:10.1007/s11837-013-0593-4

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…Trelewicz and Schuh (2008) found ≈ 10% increase in the material hardness under dynamic loading as compared to the quasi-static loading for grain sizes below 40 nm. Using similar setup to Trelewicz and Schuh (2008), Arreguin-Zavala et al (2013) performed nano-impact indentation experiments on nanostructured and ultrafine-grained Al-Si claddings at various temperatures ranging from 623 K to 773 K.…”

Section: Introductionmentioning

confidence: 99%

The combined effect of size, inertia and porosity on the indentation response of ductile materials

Santos

Srivastava

Rodríguez-Martínez

2021

Mechanics of Materials

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Herein, we present a self-similar cavity expansion model that follows from the work of Cohen and Durban (2013b) to analyze the dynamic indentation response of elasto-plastic porous materials while accounting for the plastic strain gradient induced size effect. The incorporation of the plastic strain gradient induced size effect in the dynamic cavity expansion model for elasto-plastic porous materials is the key novelty of our model. The predictions of the cavity expansion model for the material hardness, for different indentation depths and speeds, are compared against the available experimental results for OFHC copper, for strain rates varying from 10 −4 s −1 to 10 8 s −1. We note that despite several simplifying assumptions, the predictions of our cavity expansion model show a reasonable agreement with the experimentally measured material hardness over a wide range of indentation depths and speeds. In addition, we have also carried out parametric analyses to elucidate the specific roles of indentation speed, size effect and initial porosity, on the material hardness and cavitation fields that develop during the indentation process. In particular, our parametric analyses show that there exists a critical value of the indentation speed beyond which the contribution of inertial effect becomes extremely important and the material hardness increases rapidly. While the influence of the initial porosity on the material hardness is found to increase with increasing indentation speed and decrease with increasing size effect.

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Section: Introductionmentioning

confidence: 99%

The combined effect of size, inertia and porosity on the indentation response of ductile materials

Santos

Srivastava

Rodríguez-Martínez

2021

Mechanics of Materials

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“…In general, geometrically necessary dislocation (GND) theories proposed by Nix and Gao have been used to explain the decreasing trend of quasi-static hardness with depth in bulk materials, in which the higher density of GND at small depth leads to the higher hardness [39]. Arreguin-Zavala et al [40] found the linear strain gradient model is not directly applicable at high stain rate by using the nano-impact technique to investigate dynamic hardness of ultrafine-grain aluminum-silicon claddings. Based on this work, Ghosh et al [20] further investigated the ISE in nano-impact indentation by analyzing the plastic wave, impact energy and the induced indentation strain.…”

Section: Impact Energy and Dynamic Hardness Of Glc Filmsmentioning

confidence: 99%

Dynamic contact behavior of graphite-like carbon films on ductile substrate under nano/micro-scale impact

Shi

Chen

Beake

et al. 2021

Surface and Coatings Technology

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“…Originally envisaged as a test method primarily to assess the degradation of coatings to repeated localised stresses, the availability of single and multiple impact configurations, nano-and micro-scale load ranges and different indenter geometries have resulted in the development of a wide range of applications . Applications of single impact tests have included (i) strain rate sensitivity [24,25,27,28], (ii) dynamic hardness [29,41,42], (iii) dynamic H/E [45], (iv) energy absorption [40] and (v) particle-matrix delamination [46]. Applications of repetitive impact tests have included (i) the evolution of dynamic hardness and debonding [51], (ii) erosive wear simulation by matching contact size [43], (iii) fracture toughness [56], and (iv) understanding how hierarchical structures influence damage tolerance in natural tough materials [47].…”

Section: Introductionmentioning

confidence: 99%

Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

Beake

2022

Coatings

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In this review, the operating principles of the nano-impact test technique are described, compared and contrasted to micro- and macro-scale impact tests. Impact fatigue mechanisms are discussed, and the impact behaviour of three different industrially relevant coating systems has been investigated in detail. The coating systems are (i) ultra-thin hard carbon films on silicon, (ii) DLC on hardened tool steel and (iii) nitrides on WC-Co. The influence of the mechanical properties of the substrate and the load-carrying capacity (H3/E2) of the coating, the use of the test to simulate erosion, studies modelling the nano- and micro-impact test and performing nano- and micro-impact tests at elevated temperature are also discussed.

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Characterization of Nanostructured and Ultrafine-Grain Aluminum-Silicon Claddings using the Nanoimpact Indentation Technique

Cited by 7 publications

References 24 publications

The combined effect of size, inertia and porosity on the indentation response of ductile materials

The combined effect of size, inertia and porosity on the indentation response of ductile materials

Dynamic contact behavior of graphite-like carbon films on ductile substrate under nano/micro-scale impact

Nano- and Micro-Scale Impact Testing of Hard Coatings: A Review

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