Huang Hailing, Wu Qingling. Activation Energy During Superplastical Deformation of Comercial Aluminium Alloy LY<SUB>12</SUB>[J]. Editorial Office of Optics and Precision Engineering, 1989,(3): 64-68
Huang Hailing, Wu Qingling. Activation Energy During Superplastical Deformation of Comercial Aluminium Alloy LY<SUB>12</SUB>[J]. Editorial Office of Optics and Precision Engineering, 1989,(3): 64-68DOI:
This paper has represented a resesrch on the natural logarithm stress and strain-rate during superplastical deformation of the comercial Alltumin-ium Alloy LY
l2
. On the basis of measuring the activation energy of the alloy during the superplastical deformation the mechanisms of the alloy during the superpla-stical deformation was expounded from the point of energy.The results have showed that.the diffnsion in the surfaces of crystal boundary controlls the superplastical deformation in the superplastical Ⅱ regiorn and the diffusion in the body of crystal grains controlls the deformation in the superplastical Ⅲ region. The alove results are confirmed by SEM.