Study On Rolling And Recrystallization Textures Of CC And DC 3003 Aluminum Alloys

As one of the most widely used non-ferrous materials in industrial applications,aluminum alloy is becoming more and more important.The rapid economic development also stimulates remarkable demand for aluminum products.With advanced technology development,knowledge and application of aluminum alloy has reached a high level.But still people is no longer satisfied with aluminum alloy material properties that has been studied and mastered due to modern industrial demand for more strong and more flexible aluminum alloy.Along with deeper development and research,one important way is emerged to make use of aluminum alloy texture and anisotropy features to obtain more profitable property upon fundamental and intrinsic characteristics for future human life improvement.In this article evolution of the texture of CC and DC of 3003 aluminum alloy in cold rolling is researched.Research shows that CC and DC methods respectively affect strength distribution of ? fiber orientation in rolling process.With increasing rolling deformation,all CC alloy ? fiber center orientation strength also increase.Accordingly C orientation strength is increased matching with the deformation rate is much higher than B orientation.Maximum strength location of ? fiber orientation also moves along C orientation.Whereas maximum strength orientation of DC 3003 alloy approached S orientation.The laws of microstructure and texture of CC and DC 3003 aluminum alloy recrystallization annealing are studied.For cold rolling CC 3003,371? and 399? low temperature annealing results in coarse recrystallization grain with a size of 250?m along rolling direction.With increasing annealing temperature,the recrystallization grain size decreases significantly.However for DC 3003 aluminum alloy,the recrystallization grain size is only 25?m after the annealing of 288?.It is same decrease trend as CC 3003 with increasing annealing temperature.Above 371?,fine equiaxed grains are acquired.Comparing cold-rolled CC and DC 3003 aluminum alloy hardness change laws under the 538? and 593? pre-heat treatment,the recrystallization kinetics curves are obtained.Given condition of one hour annealing time,CC 3003 is recrystallized with temperature of 399?,283?,336? and 326?.Cold rolling CC 3003 aluminum alloy is much higher than DC alloy.Pre heat treatment eventually reduces recrystallization temperature and promotes recrystallization occurrence of 3003 aluminum alloy aluminum CC.Pre heat treatment temperature effect on CC 3003 aluminum alloy recrystallization and texture is obtained.Under 482? annealing temperature,cold rolling CC 3003 aluminum alloy will expect extended recrystallization grain,the grain size in the rolling direction is 35?m.However after pre heat treatment equiaxed recrystallization grain can be observed of 15?m which is equaled to cold rolling DC 3003 aluminum alloy.The recrystallization grain size of 593? pre heat treatment alloy is slightly less than 538?.The mathematical relation between texture volume fraction and the rolling true strain and annealing time is established.The JMAK equation is adopted to calculate CC and DC 3003 aluminum alloy evolution of the texture in the process of rolling quantitatively.Disappearance rate of r – cube and remainder composition of CC 3003 aluminum and ? fiber formation rate is greater than the DC alloy.Different forming methods effect on texture evolution during rolling can be attributed to the CC and DC alloy initial texture differences.Initial r-cube texture of CC alloy accelerates the forming rate of ? fiber texture.The initial extended recrystallization grain has little effect on the evolution of rolling texture.