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

• Autor(a) principal: Higuera,Oscar Fabián
• Data de Publicação: 2013
• Outros Autores: Cabrera,J. M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000300011
• topic: Equal channel angular pressing (ECAP); EBSD; copper; texture

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&gt; fiber. According to the orientation distribution function (ODF), this initial behavior allows the presence of a strong C ({001} <110&gt;) 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)[<img border=0 width=17 height=12 id="_x0000_i1026" src="../../../../../img/revistas/mr/2013nahead/1707-12s01.jpg" align=absmiddle> 2]and A2* (111)[11 <img border=0 width=8 height=12 id="_x0000_i1027" src="../../../../../img/revistas/mr/2013nahead/1707-12s02.jpg" align=absmiddle>]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.