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DEVELOPMENT OF RANDOMLY ORIENTED WROUGHT BERYLLIUM SHEET
NUCLEAR METALS DIV TEXTRON INC WEST CONCORD MASS
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Various factors affecting texture development in Be were studied in an effort to produce randomly oriented wrought Be sheet. Rolling experiments indicated that the specimen geometry and rolling sequence affected the textures developed during working. It was determined that, during rolling, the basal plane population parallel to the plane of the sheet increased with reduction in area and, when certain specimens are heat treated at high temperatures for short times, the basal plane population parallel to the plane of the sheet is reduced. Further rolling and annealing studies performed on bi-directionally rolled sheet indicated that, when the sheet is subjected to annealing temperatures in excess of 950 C, the location of the basal plane peak intensity is shifted and the intensity profile changes considerably, yielding a third-dimensional ductility of 1.75. It should be noted that the same sheet in only the stress-relieved condition possesses only 0.2 third-dimensional ductility. The same textural changes were observed in sheet samples manufactured by compression rolling. Author
APPROVED FOR PUBLIC RELEASE