Effect of residual stress on the nanoindentation response of aerospace aluminium alloys

Khan, Muhammad Kashif; Fitzpatrick, Michael E.; Hainsworth, Sarah V.; Edwards, L.

doi:10.1016/j.commatsci.2011.05.015

Cited by 52 publications

(30 citation statements)

References 23 publications

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“…For a fixed penetration depth, the loading curves for compressive stresses are higher than those for stress-free state, and conversely for tensile stresses. 31,32,34,37,39,[56][57][58][59] Figure 3 shows the effect of residual stress on loading curves. The compressive stress can constrain the indentation plasticity, thus leading to a higher indentation load than that for stress-free state.…”

Section: Effect On Load-depth Curvesmentioning

confidence: 98%

“…It is shown that pileup is large when there are large compressive stresses in the materials, but relatively small for large tensile stresses. 31,[37][38][39] For compressive stresses, the materials are pushed out to the surface of indenter, which results in more pile-up; whilst tensile stresses tend to pull the materials away from the surface of indenter to decrease the amount of pile-up. In addition to residual stress, pileup deformation behavior is related with the ratio h f /h max and workhardening behavior.…”

Section: Effect On Pile-upmentioning

confidence: 98%

“…31,37,39 Figure 4 shows the ending part of unloading curves for indents made to a maximum depth of 700 nm of copper single crystal with different residual stress states. Since the unloading process of nanoindentation is a pure elastic process and the compressive stress in the material tends to push the indenter up more, more elastic recovery and smaller residual depth are induced.…”

Section: Effect On Load-depth Curvesmentioning

confidence: 99%

“…In past decades, numerous studies have been conducted to determine residual stresses by nanoindentation. The influence of residual stress on various nanoindentation parameters such as hardness, [29][30][31] loading behavior, [32][33][34] unloading behavior, [35][36][37] contact area, 34,[37][38][39] and pile-up, 37,[39][40][41] has been investigated both experimentally and with finite element simulations.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Measurement of Residual Stresses Using Nanoindentation Method

Zhu

Xu²,

Wang

et al. 2014

Critical Reviews in Solid State and Materials Sciences

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Instrumented indentation, which is also known as nanoindentation or depth-sensing indentation, is increasingly being used to probe the residual stresses of materials including bulk solids, thin films, and coatings. The residual stresses are proved to have significant effects on various nanoindentation parameters such as hardness, loading curve, unloading curve, pile-up amount around indentation, and true contact area. By analyzing these parameters, numerous methods are developed to evaluate the residual stresses of materials in recent years. This article reviews six commonly used models which determine residual stresses from analyzing load-depth curves, as well as indentation fracture technique which is based on the classical fracture mechanics. Emphasis is placed on the principle, application and limitation of each nanoindentation method.

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Section: Effect On Load-depth Curvesmentioning

confidence: 98%

Section: Effect On Pile-upmentioning

confidence: 98%

Section: Effect On Load-depth Curvesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurement of Residual Stresses Using Nanoindentation Method

Zhu

Xu²,

Wang

et al. 2014

Critical Reviews in Solid State and Materials Sciences

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show abstract

“…Attempts have been made to use indentation testing to quantify the residual stress in materials. These use the influence of the stress on the size of the indentation and the nature of the pile up around the indentation [32]. However the reported magnitude of the influence of residual stress on the indentation is relatively small so it is not considered a significant source of error in this investigation.…”

Section: Discussionmentioning

confidence: 97%

The influence of alloy composition on residual stresses in heat treated aluminium alloys

Robinson

Redington

2015

Materials Characterization

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A Green Route Strategy for the Synthesis of Multifunctional Polymer Nanocomposites for Environmental Sustainability

et al. 2019

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Herein, one‐step green strategy is demonstrated for the synthesis of multifunctional polymer nanocomposite material using eco‐friendly thiol‐enephotopolymerization reaction at room temperature without use of any crosslinking agents. The greener route of thiol‐ene click reaction results in the formation of extremely high functional groups incorporated crosslinked surface as the thiol groups are reacted with each double bond in the nanograpite network, which is difficult to obtain by any other conventional method. In an attempt to encounter with environmental issues, this facile nanocomposite material can not only detect organic vapor in air but also degrades organic pollutant and microorganisms in water. The response time obtained by thiol‐ene functionalized nanocomposite (TE‐f‐NC) material is recorded as 6 seconds and the recovery is not more than 60 seconds towards formaldehyde vapors. The TE‐f‐NCs for detection of formaldehyde vapor will make a value‐added ultimate product and their commercialization will directly benefit to the society. Moreover, the photocatalytic activity of the obtained TE‐f‐NC material for the degradation of methyl blue (MB) under UV irradiation source was investigated, and found more than 50% of the initial concentration of MB dye degraded within first 3 min using TE‐f‐NC (0.6%) polymer nanocomposite. Along with photocatalytic activity, It is worth pointing out that the hybrid material can be readily used for antimicrobial activity toward various pathogenic microbes depicting the growth inhibition of microorganism by disrupting the cell walls.

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Effect of residual stress on the nanoindentation response of aerospace aluminium alloys

Cited by 52 publications

References 23 publications

Measurement of Residual Stresses Using Nanoindentation Method

Measurement of Residual Stresses Using Nanoindentation Method

The influence of alloy composition on residual stresses in heat treated aluminium alloys

A Green Route Strategy for the Synthesis of Multifunctional Polymer Nanocomposites for Environmental Sustainability

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