论文信息 - Effect of quenching rate on microstructure and mechanical properties of commercial AA7108 aluminium alloy

Effect of quenching rate on microstructure and mechanical properties of commercial AA7108 aluminium alloy

A commercial AA7108 aluminium alloy subjected to different quenching procedures from the solid solution temperature of 480 °C was considered. Both continuously cooling and quenching to intermediate temperatures (400, 300 and 200 °C) followed by different holding times were applied. All the materials were subsequently subjected to the same industrial two-step artificial ageing procedure to obtain a maximum strength (T6). Tensile testing of the different quenched materials in the T6 temper reveals a large deviation in strength dependent on the cooling/holding time, compared with the reference sample. A collection of the different quenched materials was chosen for further investigation of the precipitate structure by transmission electron microscopy (TEM) to

[1] Z. Yin,et al. TEM study on microstructures and properties of 7050 aluminum alloy during thermal exposure , 2009 .

[2] A. Deschamps,et al. Influence of quench and heating rates on the ageing response of an Al–Zn–Mg–(Zr) alloy , 1998 .

[3] R. Faulkner,et al. Modelling of grain boundary segregation, precipitation and precipitate-free zones of high strength aluminium alloys-II. Application of the models , 1996 .

[4] K. Easterling,et al. Phase Transformations in Metals and Alloys , 2021 .

[5] Magnus Langseth,et al. Modeling of textured aluminum alloys used in a bumper system: Material tests and characterization , 2006 .

[6] A. Deschamps,et al. Grain boundary versus transgranular ductile failure , 2003 .

[7] T. Ogura,et al. Atom probe tomography of nanoscale microstructures within precipitate free zones in Al–Zn–Mg(–Ag) alloys , 2010 .

[8] O. Hopperstad,et al. Ageing and work-hardening behaviour of a commercial AA7108 aluminium alloy , 2009 .

[9] O. Hopperstad,et al. Three-Point Bending of Heat-Treatable Aluminum Alloys: Influence of Microstructure and Texture on Bendability and Fracture Behavior , 2011 .