Texture analysis in ultrafine grained coppers processed by equal channel angular pressing

Materials Research

Oscar Fabián Higuera¹  J. M. Cabrera¹ 

[1] ,Universidad Politécnica de Cataluña Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica Barcelona,España

关键词: Equal channel angular pressing (ECAP);    EBSD;    copper;    texture;   

DOI  :  10.1590/S1516-14392013005000032

来源: SciELO

【 摘 要 】

Electrolytic tough pitch (ETP) and fire refined high conductivity (FRHC) copper samples were severely deformed at room temperature by equal channel angular pressing (ECAP) up to 16 passes (ε ~ 1 per pass), following route Bc. The effect of the initial texture on the evolution of texture after the ECAP process for both materials was analyzed. The annealed materials present a marked anisotropy, with a texture controlled by the <110> fiber. According to the orientation distribution function (ODF), this initial behavior allows the presence of a strong C ({001} <110>) component after the first two ECAP passes in both coppers. However in the second pass the C component significantly increases in the FRHC copper, whereas the ETP copper presents a much more balanced behavior of the A1* (111)[ 2]and A2* (111)[11 ]components. The textures obtained for both coppers after each ECAP pass exhibit predominant orientations with continuous distributions along the orientation fiber with simple shear texture.

【 授权许可】

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