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Abstract：
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The structure of Equal Channel Angular Processing(ECAP) die was optimized by using Finite Element Analysis(FEA) where 304 austenitic stainless steel was adopted as the analyzing object.Equivalent strain and uniformity of the deformation of extruded stainless steel were simulated and analyzed when the center location parameter X equaled 0,5,10,20mm respectively.The results of FEA simulations indicate that when X=0 and the die corner angle keeps constant,the equivalent strain is biggest and uniformity of deformation obtained is best.The results of actual extrusion experiment show that the equivalent strain and uniformity of deformation obtained are accordant with that of FEA simulations.The orientation textures,where grains are evidently elongated along a orientation,however compressed and refined in the perpendicual one,appear in the optical microstructure of the sample after extrusion.The deformation textures of the sample appear homogenous in the deformation zone.
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Funds：
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国家自然科学基金资助项目(50871041)
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AuthorIntro：
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Reference：
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