Shear Pressing for Grain Refinement of Al-Mg-Li Sheet

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A novel shear-deformation technique, named ‘shear pressing’ (SP), was developed for fabrication of plate-shaped fine grained metallic materials. The principle of SP is that a material is subjected to shear deformation by utilizing pressing with inclined plane dies. A micrometer order grain structure was obtained in an Al-Mg-Li alloy at strain of ε = -2.3 by utilizing this technique. The grain refinement sequences during pressing were examined by electron backscatter diffraction. The enhancement of grain refinement to the Al-Mg-Li alloy was compared with plane strain compression (PSC) at similar strains. The effect of the shear strain on the accelerated grain refining during compressing has been discussed.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

885-888

Citation:

Y. X. Du et al., "Shear Pressing for Grain Refinement of Al-Mg-Li Sheet", Materials Science Forum, Vols. 546-549, pp. 885-888, 2007

Online since:

May 2007

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Price:

$38.00

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