Accession Number : AD0687653

Title :   TENSILE PROPERTIES OF UNIDIRECTIONALLY SOLIDIFIED Al-CuAl2 EUTECTIC COMPOSITES,

Corporate Author : LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF MATERIALS SCIENCES LAB

Personal Author(s) : Crossman,F. W. ; Yue,A. S. ; Vidoz,A. E.

Report Date : 09 JUL 1968

Pagination or Media Count : 10

Abstract : Tensile specimens were prepared from a single grain of an epitaxially grown Al-CuAl2 eutectic ingot. The tensile properties of the eutectic single crystals were determined at room temperature as functions of interlamellar spacing, platelet orientation, and thermomechanical treatment. The observed variations in composite stress and modulus with respect to the level of composite strain are discussed in terms of premature fracture of CuAl2 platelets, a distribution function for the strength of the lamellae, and unequal strains due to localized fracture of platelets. The tensile properties at elevated temperatures were determined for the directionally solidified eutectic oriented with platelets parallel to the tensile axis. (Author)

Descriptors :   (*ALUMINUM ALLOYS, COMPOSITE MATERIALS), (*COPPER ALLOYS, TENSILE PROPERTIES), EUTECTICS, INTERMETALLIC COMPOUNDS, SINGLE CRYSTALS, BUCKLING, CRACK PROPAGATION, YIELD POINT, FRACTURE(MECHANICS), STRESSES

Subject Categories : Metallurgy and Metallography
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE