Paper Titles
Precipitation Behaviour of Zirconium Compounds in Zr-Bearing Al-Mg-Si Alloy
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Age-Hardening Behaviour and HRTEM Observation of Precipitates in Excess Mg Type Al-Mg-Si-Ag Alloy
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The Effect of Ag-Addition on Crystal Structure of β'-Phase in Al-Mg-Si Alloy
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Effect of Small Additions of Fe on the Tensile Properties and Electrical Conductivity of Aluminium Wires
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Heat Treatment Effect on Properties of Al-Mg-Si-Cu 1370 Alloy
p.519
Recrystallisation Resistance of Extruded and Cold Rolled Aluminium Alloys with Additions of Hf, Sc and Zr
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An Investigation of the Solubility of Scandium in Iron-Bearing Constituent Particles in Aluminium Alloys
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Effect of Minor Sb Additions on SDAS, Age Hardening and Mechanical Properties of A356 Aluminium Alloy Casting
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The Effect of Pre-Ageing and Addition of Copper on the Precipitation Behaviour in Al-Mg-Si Alloys
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Heat Treatment Effect on Properties of Al-Mg-Si-Cu 1370 Alloy

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Abstract:

The Russian 1370 Al-Mg-Si-Cu alloy (analogue of 6056) is an advanced material for the skin and stringers of fuselage. However, these alloys are susceptible to the intercrystalline corrosion depending on the heat treatment regimes. The investigations of the effect of heating temperature during the solid solution treatment (530-555)°C and quenching rate, ageing regimes and interval between the quenching and ageing on the structure and properties of 1370 alloy sheets were performed. The strengthening β (Mg2Si) -phase and Q (Al5Cu2Mg8Si6) -phase relationship dependence of the alloy properties is established. Using the dark field electron microscopy which permits to intensify separate diffraction reflexes of strengthening phases the structure of Q-phase precipitates has been studied. Optimization of heat treatment of 1370 alloy sheets provided the combination of fracture toughness characteristic (Kco= 100 MPa√m) high level, the ultimate strength of 400-420 MPa and intercrystalline corrosion no more 100 μm in depth.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

519-524

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.519

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Online since:

July 2006

Authors:

N.I. Kolobnev, L.B. Khokhlatova, S.V. Samokhvalov, A.A. Alekseev, S.V. Sbitneva, T.I. Tararaeva, V.I. Popov

Keywords:

AA1370, AA6056, Al-Mg-Si-Cu, Heat Treatment, Intercrystalline Corrosion

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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