High-strength Al – Zn – Mg – Cu alloys and light Al – Li alloys

Антипов, В.В.; Senatorova, O. G.; Ткаченко, Е. А.; Vakhromov, Roman

doi:10.1007/s11041-012-9410-x

Cited by 15 publications

(8 citation statements)

References 1 publication

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“…Thus tensile strength and yield strength increase. However, the continuous increase in temperature makes the grain recrystallization to grow up, which in turn results in the decrease of the strength [10,11]. Therefore, the solid solution temperature cannot be very high.…”

Section: Methodsmentioning

confidence: 99%

Influence of quenching parameters on mechanical properties and conductivity of 7A09 aluminum alloy

Shi¹,

Kang²,

Chen³

et al. 2021

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The influence of solid solution temperature, water quenching temperature, transfer time before quenching and delay time after quenching on the mechanical properties and conductivity of 7A09 aluminum alloy were investigated. The mechanical properties and conductivity keep relatively stable at the range of 460-490 • C. When the transfer time before quenching is more than 20 s or the water quenching temperature is higher than 40 • C, the strength and conductivity drop remarkably while the elongation keeps rising all the time. Before the delay time is 8 h, the strength drops quickly while the elongation and conductivity rise continuously. In the range of 8-24 h there is an opposite change compared to the previous 8 h. Once the delay time exceeds 24 h, all the properties become stable. The optimal quenching parameters are as follows: the solid solution temperature is 460-490 • C, and the water quenching temperature and the transfer time before quenching are below 40 • C and 20 s, and the delay time after quenching is below 2 h or above 24 h.

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Section: Methodsmentioning

confidence: 99%

Influence of quenching parameters on mechanical properties and conductivity of 7A09 aluminum alloy

Shi¹,

Kang²,

Chen³

et al. 2021

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“…However, it can be seen from Figure 2b that the obvious over-burn and the complex re-melting grain boundaries appear. According to the relevant literature [11][12][13] the precipitated phases continuously distribute at the re-melting grain boundary. The evenly distributed fine precipitated phases inside the grains are the coherent GP zone and the small amount of transition phase.…”

Section: Effect Of Solid-solution Temperature On the Mechanical Propementioning

confidence: 99%

Effect of quenching parameters on the mechanical properties of the 7A04 aluminium alloy

Shi¹,

Kang²,

Gao³

2017

Mater. Tehnol.

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The effects of quenching parameters, including the solid-solution temperature, water temperature of quenching, transfer time before quenching and delay time after quenching on the mechanical properties of the 7A04 aluminium alloy were studied. The experimental results showed that the mechanical properties are relatively stable when the solid-solution temperature is at 460-490°C, but the over-burn will appears once the temperature exceeds 500°C. When the water temperature of quenching and the transfer time before quenching are above 40°C and 20 s, the strengths of the 7A04 alloy will drop remarkably. Before the delay time after quenching is 8 h, the strengths will drop gradually while the elongation will rise continuously. In the range of 8-24 h there is an opposite change of mechanical properties compared to the previous 8 h. Once it exceeds 24 h, the mechanical properties will become stable. Keywords: quenching parameters, 7A04 aluminium alloy, mechanical properties, delay time, transfer time Preu~evani so bili vplivi parametrov ga{enja, vklju~no s temperaturo raztopnega`arjenja,~asa prehoda pred ga{enjem in~asa zadr`evanja po ga{enju, na mehanske lastnosti aluminijeve zlitine 7A04. Rezultati eksperimentov so pokazali, da so mehanske lastnosti relativno stabilne,~e je temperatura raztopnega`arjenja med 460°C-490°C; za`gano pa je, ko temperatura prese`e 500°C. Ko je temperatura vode za ga{enje nad 40°C in~as prehoda pred ga{enjem nad 20 s, se trdnosti zlitine 7A04 ob~utno zmanj{ajo. Pri~asu zadr`evanja do 8 h po ga{enju, se trdnost stalno zmanj{uje, medtem ko se raztezek pove~uje. V~asu od 8-24 h je ravno obratna sprememba mehanskih lastnosti, v primerjavi s predhodnimi pri 8 h. Ko~as prese`e 24 h, mehanske lastnosti postanejo stabilne. Klju~ne besede: parametri ga{enja, aluminijeva zlitina 7A04, mehanske lastnosti,~as zadr`evanja,~as prehoda

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“…Al-Zn-Mg-Cu super high strength aluminum alloys have high specific strength, specific stiffness and good processability, which are widely used in aerospace and civil industry [1] [2] [3]. It is an important way to improve the strength of the alloy to control the size and quantity of the precipitated strengthening phase [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Minor Cr Additions on Dispersed Phase and Properties of Al-Zn-Mg-Cu-Zr Alloys

Liao¹,

Li²,

Dong³

et al. 2020

MSCE

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The influences of Cr on dispersed phase and properties of Al-Zn-Mg-Cu-Zr alloys were investigated by mechanical testing, slow strain rate stress corrosion, intergranular corrosion, combined with optical microscope, scanning electronic microscope, transmission electronic microscopy (OM, SEM, TEM). Research shows that: with the increase of element Cr, the recrystallization and grain growth had been inhibited, the strength, toughness and corrosion resistance of the alloy increased first and then decreased; when added 0.1 wt% Cr element, the properties of the alloy are the best. The main reasons of that were as below: when added 0.1 wt% Cr element, (Al,Cr) 3 (Zr,Yb) appeared, that cohered with the matrix. When added 0.18 wt% Cr element, (Al,Cr) 3 (Zr,Yb) and Al 18 Mg 3 Cr 2 had been found, making adverse effects on alloys. This work studied the effect of Cr content on recrystallization and grain growth in order to get a new super high strength aluminum alloy.

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High-strength Al – Zn – Mg – Cu alloys and light Al – Li alloys

Cited by 15 publications

References 1 publication

Influence of quenching parameters on mechanical properties and conductivity of 7A09 aluminum alloy

Influence of quenching parameters on mechanical properties and conductivity of 7A09 aluminum alloy

Effect of quenching parameters on the mechanical properties of the 7A04 aluminium alloy

Effect of Minor Cr Additions on Dispersed Phase and Properties of Al-Zn-Mg-Cu-Zr Alloys

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