The effects of aging treatment and strain rates on damage evolution in AA 6061 aluminum alloy in compression

Adesola, A.O.; Odeshi, A.G.; Lanke, U. D.

doi:10.1016/j.matdes.2012.08.021

Cited by 41 publications

(13 citation statements)

References 40 publications

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“…However, the tensile strength was reduced due to particle fracture and particle-matrix debonding. Studies of artificial aging treatment on aluminium 6061 alloys showed that T6 and T8 temper treatments impart almost the same hardness, but the T8 temper provides twice the yield strength as that of T6 temper [11]. Peakaging conditions for artifical aging with T6 treatment occurred after 200 min of aging at 200 8C, but coarser precipitates were observed [12].…”

Section: Introductionmentioning

confidence: 99%

Potentiality of artificially aged aluminium 6061 hybrid composites reinforced with granite and graphite micro–fillers for structural applications

Sharma

Pai

Gowrishankar

2017

Materialwissenschaft Werkst

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The current study explores the feasibility of artificial aging treatment to aluminium alloy 6061 hybrid composites reinforced with graphite and fine granite particulates to suit structural applications. Aging at 100 °C retrieved a better response of the hybrid composites as compared to that at 150 °C in terms of peak hardness and strength. Among the five different stir‐cast compositions, the composition of aluminium 6061 with 2 wt. % graphite and 4 wt. % granite showed enhanced mechanical properties than that of the base alloy as well as mono reinforcement type composites which was attribued to the formation of rod‐shaped β‐Mg2Si precipitates.

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Section: Introductionmentioning

confidence: 99%

Potentiality of artificially aged aluminium 6061 hybrid composites reinforced with granite and graphite micro–fillers for structural applications

Sharma

Pai

Gowrishankar

2017

Materialwissenschaft Werkst

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“…Split Hopkinson bars were designed for all three modes of deformation and extensively used for compression and tension studies. [1][2][3][4][5][6][7][8] Owing to the difficulty of complications involved in making the Split Hopkinson torsion bar setup and the difficulties in making standard torsion sample, very few study in high strain torsion have been done so far.…”

Section: Introductionmentioning

confidence: 99%

Fracture analysis of high strain rate torsion samples of aluminium zinc magnesium copper alloy

Tiwari¹,

Chopkar²

2017

MSEIJ

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Aluminium alloy 7075-T651 was subjected to Torsional Split Hopkinson Bar. A Hollow thin wall cylindrical samples were twisted with an instant release of bar with stored toque generating strain rate in the range of 730s-1 to 2041s-1. Few samples failed around highest strain rate in the range of 2041s-1. A hollow thin wall cylindrical sample failing under high strain torsion revealed a range of failure from brittle to ductile owing to material behaving differently at different strain rates along the circumference of fracture. Brittle failure at high strain rates were typically flat with sheared precipitates and intermetallic inclusions. Ductile failure showed elongated oval dimples typical of shear fracture and bypassed precipitates and intermetallic inclusions. Sample bending, crack splitting and crack diversion was also observed.

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“…The critical strain for occurrence of shear bands in metallic alloys depends on the strain rates, temperature and grain size [10]. The propensity of an aluminium alloy to form ASBs and fail at high strain rates is dependent on the initial temper condition [2], [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Shear strain localization in AA 2219-T8 aluminum alloy at high strain rates

Owolabi¹,

Bolling²,

Tiamiyu³

et al. 2016

Materials Science and Engineering: A

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AA 2219 aluminum alloy is characterised by high temperature strength, good weldability and excellent suitability as choice material for several components in defense and aerospace structures. In this paper, the dynamic impact response of cylindrical specimens of AA 2219-T8 alloy was investigated using the split Hopkinson pressure bar while strain evolution during the dynamic deformation was monitored in-situ using digital image correlation (DIC) technique. The results of DIC analysis and microstructural evaluation of the impacted specimens indicated occurrence of heterogeneous deformation characterised by intense shear strain localisation. The strain localisation became noticeable after 80 s from the start of deformation. Both transformed and deformed shear bands developed in the specimens and they cracked along the transformed bands at high strain rates. Microstructural analysis of the as-received alloy suggested that it consists of two type of dispersed second phase particles: coarse particles which are 10-45 m in size and fine precipitates of sizes less than 1 m. Intense adiabatic heating and strain localization led to the dissolution of the coarse second phase particles inside the transformed bands while the fine second phase particles survived the heat. The dynamic mechanical response of the alloy and its tendency to form adiabatic shear bands are influenced by the length to diameter ratio of the cylindrical test specimens.

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The effects of aging treatment and strain rates on damage evolution in AA 6061 aluminum alloy in compression

Cited by 41 publications

References 40 publications

Potentiality of artificially aged aluminium 6061 hybrid composites reinforced with granite and graphite micro–fillers for structural applications

Potentiality of artificially aged aluminium 6061 hybrid composites reinforced with granite and graphite micro–fillers for structural applications

Fracture analysis of high strain rate torsion samples of aluminium zinc magnesium copper alloy

Shear strain localization in AA 2219-T8 aluminum alloy at high strain rates

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