T6all y.Withtheincrease fstress the p larizati ncurve f7075-RRAall yslightlym vedt p sitivedirecti nandtheareas freversecircleincreased. KeywOrds Stressc rr si n Sl strainratetest 7075aluminumall y l 引 言 7075 铝合金具有高强度和低密度 是航空航天 器件的优良结构材料 任何结构材料都必须考虑...
even under a weak polarization.However,the extent of increase was different among the alloys with various heat treatment states.For example,polarization had weaker effect on SCC of70752RRA and70752 T7351alloys than on SCC of70752T6alloy.With the increase of stress,the polarization curve of70752RRA...
This study investigates experimentally the cyclic elastoplastic performance of aluminum 7075-T6 loaded in symmetric strain control, and asymmetric stress and strain control. A combination of cyclic hardening and softening was noticed from high strain amplitude symmetric strain-controlled tests and at low ...
strain Repeat for all {hkl}s for all at N Actual Al 7075 T6 Data Strain Pole Figures Stress-Strain Curve for 7075 T6 What In-situ X-ray Diffraction gives us In-situ X-ray diffraction provides a “snap shot” of the aggregate lattice strain Can invert lattice strain ...
cooling,moldcooling,andwatercooling,andthequenchingfactortimestepvaluerangeunderdifferentcoolingrateswereanalyzed.2.Conductuniaxialhottensileexperimentsof7075aluminumalloywithdifferenttensiletemperaturesandstrainrates,andstudytherelationshipbetweenthetrue stress-strain curve and different tensile temperatures and strain ...
A characterization for the dynamic recrystallization kinetics of as-extruded 7075 aluminum alloy based on true stress–strain curves[J] . Guo-zheng Quan,Yuan-ping Mao,Gui-sheng Li,Wen-quan Lv,Yang Wang,Jie Zhou.Computational Materials Science . 2011...
model and the localized necking model.However,the diffuse necking model is only applicable to biaxial tension stress state under proportional loading condition[7].The localized necking model has the imperfection that localized necking will not appear when sheet metal is under biaxial tensile strain ...
High strain-rate compressive stress–strain characteristics of AA7075-T651 and its welds as produced by the friction stir welding (or FSW) process are investigated using the conventional split Hopkinson pressure bar. Friction stir welded AA7075-T651 joints are made under a fixed set of welding c...
The effect of excimer laser surface treatment on the stress corrosion cracking (SCC) behaviour of 7075 aluminium alloy was studied in a 3·5%NaCl solution using a slow strain rate test (SSRT). The test was conducted at the open circuit potential, a constant anodic or cathodic potential. The...
the shear stress can be calculated by dividing the cross-sectional area into force and the shear strain also obtained through DIC method. The complete responses of AA7075-T6 under shear are shown in Fig.20and the combined Voce–Hockett–Sherby hardening model was utilized to fit such responses...