Laüe back-reflection method for crystallographic orientation of a martensitic Cu-Zn-Al single crystal of the monoclinic system

• Autor(a) principal: Zambrano, Uíslei Carlos [UNESP]
• Data de Publicação: 2008
• Outros Autores: Blanco, Matildes [UNESP], Barelli, Nilso [UNESP], Benedetti, Assis Vicente [UNESP], Fernández, Javier
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0100-40422008000100027; http://hdl.handle.net/11449/25479
• topic: single crystal orientation; copper-based alloy; Laüe back-reflection method

A martensitic single crystal Cu-23.95Zn-3.62(wt.%)Al alloy was obtained melting pure Cu, Zn and Al using Bridgman's method. The martensitic phase (monoclinic) can present up to 24 variants, and orienting the surface according to a certain plane is a very hard task. The single crystal was submitted to 8 tons of tension (stress) along the longitudinal direction to reduce the number of variants and facilitate the surface orientation according to the desired plane. This single crystal was oriented using the Laüe back-reflection method to give surfaces with the following oriented crystallographic planes: (010), (120) and (130). It was observed that the tension stress was applied along the [010] direction.