Microstructural evolution during aging of an AlCuLiAgMgZr alloy

Kumar, K.S.; Brown, Suzanne; Pickens, J. R.

doi:10.1016/1359-6454(95)00319-3

Cited by 159 publications

(81 citation statements)

References 28 publications

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“…As is well known, Al alloys of the series 2000, containing Cu as the main alloy element, exhibit optimal mechanical properties after thermal treatment and are suitable for service temperature up to about 150°C [4,5].…”

Section: Introductionmentioning

confidence: 99%

A Weldability Study of Al–Cu–Li 2198 Alloy

et al. 2014

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Al-Cu-Li alloys, conceived for automotive and aeronautic applications thanks to the high mechanical resistance/density ratio, exhibit weldability issues common to all light alloys. In this paper, the weldability of Al-Cu-Li 2198 alloy was studied by comparing features of welds carried out by two processes, the traditional arc welding and the friction stir welding (FSW). Welded joints were submitted to optical and SEM metallographic examinations with EDS microanalysis measurements. Mechanical characteristics were evaluated through microhardness tests and the instrumented indentation test FIMEC (Flat-top cylinder Indenter for MEchanical Characterization).

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Section: Introductionmentioning

confidence: 99%

A Weldability Study of Al–Cu–Li 2198 Alloy

et al. 2014

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“…The alloy is then rapidly quenched to form a supersaturated solution 5,6 . Afterwards, the artificial aging is generally carried out at temperatures up to approximately 200 °C [7][8][9][10][11]. The usual precipitation sequence of the 7000 series Al-alloys can be summarized as: solid solution -GP zone -metastable ή -stable η (MgZn 2 ) [12] .…”

Section: Introductionmentioning

confidence: 99%

“…A set of test pieces was solution heat treated at 480 °C for 2 h, water quenched (SHTWQ) then pre-strained for 8% in tension. The test samples were aged at 140 °C for 0.5, 1,2,3,4,6,8,10,12,24, 48, 72 and 96 h in a furnace. The other set of test samples were solution heat treated at 480 °C for 2 h, quenched in sand (SHTSQ) then pre-strained for 8% in tension.…”

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confidence: 99%

Effect of Quenching Rate and Pre-strain on the Strain Ageing Behaviors of 7075 Aluminum Alloys

Kaçar

Güleryüz

2015

Mat. Res.

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The mechanical properties of aluminum alloys are strongly dependent on the thermo-mechanical process so, the strain ageing behavior of 7075 Al-alloy was investigated in this study. A set of test pieces was solution heat treated at 480 °C for 2 h, water quenched (SHTWQ) then pre-strained for 8% in tension. The test samples were aged at 140 °C for 0.5, 1,2,3,4,6,8,10,12,24, 48, 72 and 96 h in a furnace. The other set of test samples were solution heat treated at 480 °C for 2 h, quenched in sand (SHTSQ) then pre-strained for 8% in tension. They were also aged at 140 °C for same intervals. The effect of strain ageing, on the mechanical properties of Al-alloy, was investigated by mean of hardness, and tensile tests. The results shown that, the quenching rate after solution heat treatment, ageing time and temperature, as well as pre-strain, play a very important role in the precipitationhardening associated with ageing process of the 7075 Al-alloy.

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“…The 2195 Aluminum-Lithium alloy is an Al-Cu-Mg-Li-Ag-Zr alloy, which is one of the"Weldalite" alloys [1]. These alloy contain a wide variety of precipitates, depending upon heat treatment conditions, including Guinier-Preston (GP) zones, ȕƍ(Al 3 Zr), įƍ(Al 3 Li), į (AlLi), T 1 (Al 2 CuLi), Sƍ and S (Al 2 CuMg), T 2 (Al 6 CuLi 3 ), and possibly ȍ as well [4][5][6][7]. The 2195-T8 alloy was selected in this paper.…”

Section: Introductionmentioning

confidence: 99%

In-situ Investigation of the Fracture Behaviors of 2195-T8 Aluminum-Lithium alloy

Wang

Hao

et al. 2016

MATEC Web Conf.

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Abstract. In this paper, the tensile crack initiation and propagation behavior of 2195-T8 Aluminum-Lithium alloy was studied by in situ scanning electron microscope observation at room temperature. It was found that cracks initiated at second phases which propagated along the grain boundaries only as T 1 phases could retard crack growth inside grains. With further increase of strain, within the grain a large number of slip bands were produced, resulting in the deflection of the grains, which leaded to transgranular fracture at last. SEM examination show both intergranular and transgranular fracture surface morphology indicating that the 2195-T8 alloy revealed a mix mechanism for the fracture.

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Microstructural evolution during aging of an AlCuLiAgMgZr alloy

Cited by 159 publications

References 28 publications

A Weldability Study of Al–Cu–Li 2198 Alloy

A Weldability Study of Al–Cu–Li 2198 Alloy

Effect of Quenching Rate and Pre-strain on the Strain Ageing Behaviors of 7075 Aluminum Alloys

In-situ Investigation of the Fracture Behaviors of 2195-T8 Aluminum-Lithium alloy

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