INTERFACIAL STRUCTURAL RELATIONSHIP BETWEEN S'(Al_2CuMg) AND ALUMINUM

Abstract

Abstract: A clear understanding of the structure of the S precipitates which are present in Al-Li-X alloys is verp imporiant because the S -phase decreases the localization of strainand promotes less anisotropic properties during deformation. The close structural re-lationship between the S-phase and the Al matrix and their possible intedece bound-ary strvcture are described in detail. The proposed model is in good agreement with::::rimental obserwations. The dynamics Of the phase trunWrmation and possiblermation mechani8ms for the S,-phase are alSo proposed.

Key words: Al-Li alloy, S-phase, structure

Q.B. Yang;G.J Shifietand E.A. Starke, Jr(Department of Physics, Xiangtan University, Xiangtan 411105, China)(Depedment of Materials Science and Engineering, University of Virginia, Charlottesvil1e, VA22903, USA). INTERFACIAL STRUCTURAL RELATIONSHIP BETWEEN S'(Al_2CuMg) AND ALUMINUM[J]. Acta Metallurgica Sinica (English Letters), 1997, 10(4): 304-310.

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INTERFACIAL STRUCTURAL RELATIONSHIP BETWEEN S'(Al_2CuMg) AND ALUMINUM

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