Ageing and work-hardening behaviour of a commercial AA7108 aluminium alloy

Westermann, Ida; Hopperstad, Odd Sture; Marthinsen, Knut; Holmedal, Bjørn

doi:10.1016/j.msea.2009.06.036

Cited by 41 publications

(22 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The high strength aluminum alloys are therefore an exceptional material for energy absorption 4 . The 7000 series aluminum alloy is known as "heat treatable alloys 4 .…”

Section: Introductionmentioning

confidence: 99%

“…The high strength aluminum alloys are therefore an exceptional material for energy absorption 4 . The 7000 series aluminum alloy is known as "heat treatable alloys 4 . The mechanical properties of these alloys are strongly dependent on the thermo-mechanical process and it is therefore important to understand the relationship between the microstructure evolution during thermomechanical processing and the mechanical properties.…”

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.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

Kaçar

Güleryüz

2015

Mat. Res.

View full text Add to dashboard Cite

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.

show abstract

“…The high strength aluminum alloys are therefore an exceptional material for energy absorption 4 . The 7000 series aluminum alloy is known as "heat treatable alloys 4 .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

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

Kaçar

Güleryüz

2015

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…Much less attention has been paid to the influence of a precipitate structure on the work hardening behaviour, especially when it comes to large strains. Cheng et al [30][31][32][33] studied the work hardening of several tempers of AAxxx and AA7xxx alloys based on tensile tests, spanning from the supersaturated solid solution to overaged conditions. The initial work hardening rate was seen to decrease with ageing up to the peak-aged condition.…”

mentioning

confidence: 99%

“…Gracio et al [35] performed shear tests on a number of conditions of AA6022, and Lloyd and Kenny [18] torsion tested the alloys AA2036 and AA7010 in their T4 and T6 tempers. Westermann et al [31][32][33] looked at 7xxx alloys, and Campbell et al [36] performed hydraulic bulge tests on an AA6010 alloy and found a very low work hardening rate in the strain range ε=0.1-0.5 in the overaged specimen.…”

mentioning

confidence: 99%

Precipitation, strength and work hardening of age hardened aluminium alloys

Ryen¹,

Holmedal

Marthinsen

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. The strength and work hardening of age hardened AA6063 and AA6082 alloys have been investigated in terms of a detailed characterization of precipitate and dislocation structures obtained by TEM and SEM. Tensile and compression tests were performed at as quenched, peak aged and severely aged conditions. A strong work hardening in the as quenched condition was found, similar to AlMg alloys with twice as much alloying elements in solid solution. It was found that the initial work hardening rate and the critical failure strain are both smallest at the peak aged condition. During large deformations the needle-shaped precipitates are sheared uniformly by dislocations altering their <001> orientations, which indicates extensive cross slip. In the overaged condition the early initial work hardening is larger than at the peak aged condition, but followed by a weak linear work hardening, apparently directly entering stage IV at a low strain. Cracked, needle-shaped precipitates were seen at larger strains.

show abstract