The textures that develop in a 5182 aluminumalloy as a result of monotonic high-temperature compressionhave been investigated. We found that the deformation texturewas a function of temperature. For compressive deformation at300 deg C and below the material formed the classic (101)deformation texture, while the material develops a texture that isa combination of the classical uniaxial compression deformationtexture, (101), and static recrystallization texture, (001), IB aresult of the deformation alone when the deformationtemperature was at and above 400 deg C. Our investigation hasfocused on determining the mechanism responsible for thedevelopment of this unusual progression of deformation textures.In order to understand the mechanism(s) responsible for thisparticular development, we have performed interruptedcompression experiments as well as microstructural analyses.The deformation experiments consisted of deforming to a givenstrain, holding at temperature for various times at zero strainrate, followed by either quenching or further deformation.In addition we have performed orientation imaging microscopy(OIM) to identify the shapes of grams with particularorientations and grain-to-grain orientation relationships.Finally, crystal plasticity theory was used to model whether ornot deformation via different slip systems and high strain-ratesensitivity could produce the (101) and (001) texture components.Our conclusions are summarized as follows: The texturedevelopment is not a result of static processes, i.e. staticrecrystallization at the various hold times altered neither thetextures nor the constitutive behavior. Simulation using a crystalplasticity model indicates that the combination of a cubecomponent prevalent in the original texture, slip activity on 011planes, and increased rate sensitivity leads to a combined (001)and (101) texture. Finally, the microscopic OIM results areconsistent with these observations.
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