多結晶アルミニウムの微視的塑性変形挙動のレーザ顕微鏡による定量的評価

概要

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The microscope plastic deformation behavior of polycrystalline aluminum sheet during uniaxial tension is experimentally investigated by a confocal laser- scanning microscope. Measuring method of grain rotation from images of specimen surface before and after deformation is proposed. Digital image processing technique is applied to the surface grain image taken by the CCD camera.It is shown that the averaged grain-rotation on the observed surface plane is much less than the averaged grain-rotation out of the surface plane. The averaged grain rotation in both directions linearly increases with the applied strain. The grain rotation in material is much less than that on the surface. It is shown that the grain rotation is large when the shape of grain is close to a circle. Discussions are made on the relation between grain rotation, strains of grains and various factors affecting them, such as grain size, grain shape and slip-line angle.
津山工業高等専門学校の論文
2006-02-28