Dynamic Mechanical Behaviors of 6082-T6 Aluminum Alloy

Yibo, Peng; Wang, Gang; Zhu, Tailin; Shangfeng, Pan; Rong, Yiming

doi:10.1155/2013/878016

Cited by 21 publications

(18 citation statements)

References 12 publications

(13 reference statements)

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“…In classical mechanics, fracture toughness is measured as the maximum stress intensity factor under plane strain condition [20][21][22] . Classical measurement of toughness for bulk materials are the Charpy test, three-point and four-point bending [23][24][25][26] .…”

Section: Methodsmentioning

confidence: 99%

Microstructures and Mechanical Properties of TiN/CrN Multilayer Films

Qiaoling

Wang²,

et al. 2017

Rare Metal Materials and Engineering

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In order to study the relationship between mechanical properties and microstructure of TiN/CrN multilayer coatings, the TiN, CrN film and three TiN/CrN multilayer films with different periodicities were prepared on monocrystalline silicon by magnetron sputtering. Atomic force microscope and X-ray diffraction were adopted to analyze the surface morphology and phase constitution of the films, respectively. The hardness and indentation plasticity were studied using nanoindenter. Residual stress was measured by a curvature method. The results show that TiN/CrN multilayer films exhibit a mixture of TiN and Cr2N phases, the interface zone between TiN layer and CrN layer becomes small and sharp with the increasing of periodicity. Hardness and indentation plasticity of multilayer films are better than those of monolayer films, and increase as the bilayer period decreases. For multilayer films, the residual stress increases gradually with the increasing of periodicity. From the above observation, it can be concluded that the improvement in mechanical property depends on minor periodicity. The results agree well with Hall-Petch theory.

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Section: Methodsmentioning

confidence: 99%

Microstructures and Mechanical Properties of TiN/CrN Multilayer Films

Qiaoling

Wang²,

et al. 2017

Rare Metal Materials and Engineering

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“…al. [37] state that the increase of true stress in the plastic stage is much slower than the elastic stage and strain increases with an increasing rate during plastic stage. The flow stress, which is the true stress in the plastic range, increases until the necking gets appeared at stress values close to ultimate tensile strength.…”

Section: Determination Of Triaxial Deformationsmentioning

confidence: 99%

The height Digital Image Correlation (hDIC) technique for the identification of triaxial surface deformations

Uzun

Korsunsky

2019

International Journal of Mechanical Sciences

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This paper introduces the height digital image correlation (hDIC) technique for the identification of triaxial deformations. Conventional digital image correlation (DIC) uses pixel image intensity as the basis for the determination of in-plane displacement fields. We demonstrate the advantages of using the out-of-plane surface height and its variation during deformation to extract information about triaxial (in-plane and out-of-plane) displacement fields. Surface height maps can be obtained by optical profilometry or scanning probe microscopies, e.g. stylus profilometry, coordinate measurement machine (CMM), or atomic force microscope (AFM). The changes in height during deformation are sufficiently small to allow efficient correlation of in-plane displacements with sub-pixel accuracy, yet also provide information about out-of-plane displacements. In the present study, the contour map of surface height was created using digital dynamic focus optical microscope. The correlation between the reference and target maps to extract the displacement data was accomplished by a two-step correlation process. Initially, triaxial Cartesian coordinate data of reference and target data sets were cross-correlated at integer-pixel level sensitivity. This was followed by sub-pixel correlation using gradient descent method. As an example of technique application, Al alloy test specimens were subjected to large tensile deformations to failure. Good agreement was found between height digital image correlation (hDIC) analysis of displacements and strains and the reference material properties, with the evolution of both inplane strains and out-of-plane displacements show progressive localisation during postcritical deformation beyond the sample's ultimate tensile strength (UTS).

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“…The strain rate sensitivity of AA6082T6 was reported in the literature to be low at RT. [29][30][31][32] Yibo et al 32 studied its plastic behaviour for quasi-static to moderate strain rates (0.001-100 s 21 ) and noticed a slight increase in yield and tensile strength within this range. Therefore, the plastic behaviour considered for AA6082T6 under impact was adapted from his work and is represented in Figure 1.…”

Section: Sljmentioning

confidence: 99%

Experimental and numerical study of the dynamic response of an adhesively bonded automotive structure

Silva

Machado

Marques

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Based on economic and environmental factors related to energy efficiency, the automotive industry is being increasingly encouraged to design lighter structures, making use of adhesive bonding in vehicle body frames. To meet the standards of the automotive sector, adhesive joints must provide high strength and stiffness, low cost and good energy absorption at a component level, thereby ensuring good impact strength and passenger safety. This work aims to study, at room temperature (24°C), the impact response of a real scale automotive structure bonded with a crash-resistant epoxy, allowing to access the suitability of adhesives for automotive structural purposes. The epoxy adhesive was found to successfully transfer the loads to the aluminium substrates and not to compromise the integrity of the structure, as its failure was dominated by the behaviour of aluminium. Results obtained with a numerical model of the component were found to be in close agreement with the experimental failure load, demonstrating that numerical analysis can be a viable tool to predict the structure’s behaviour. In addition, a polyurethane was used as an alternative to the epoxy system to bond the structure, proving that the joint behaves better in the presence of a more flexible adhesive, as no failure was found for this case. Aluminium single-lap joints with two adhesive thicknesses were tested as a complement to understand the influence of this parameter on the impact response of a joint, showing a 21% decrease in strength when the highest thickness was used.

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Dynamic Mechanical Behaviors of 6082-T6 Aluminum Alloy

Cited by 21 publications

References 12 publications

Microstructures and Mechanical Properties of TiN/CrN Multilayer Films

Microstructures and Mechanical Properties of TiN/CrN Multilayer Films

The height Digital Image Correlation (hDIC) technique for the identification of triaxial surface deformations

Experimental and numerical study of the dynamic response of an adhesively bonded automotive structure

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