INFLUENCE OF AGING ON MICROSTRUCTURE AND TENSILE BEHAVIOR OF Al ALLOY 8090

Abstract

Abstract: The variations of microstructure and tensile behavior of an Al-Li-Cu-Mg-Zr alloy during aging are studied in this paper. It has been found that the fine δ-phase precipitated in the underaging condition and that the δ-, S-and T1-phases precipitate in the peak aging and the overaging conditions. The alloy exhibits transgranular fracture on the underaging condition, and mixture of transgranular and intergranular ruptures in the peak aging and overaging conditions.

Key words: A1 alloy 8090, aging, microstructure, fracture

JIANG Daming, SUN Fenglian, HONG Bandc, LEI TingquanHarbin Institute of Technology, Harbin, ChinaDOWNHAM D A, LORIMER G WUniversity of Manchester, UK. INFLUENCE OF AGING ON MICROSTRUCTURE AND TENSILE BEHAVIOR OF Al ALLOY 8090[J]. Acta Metallurgica Sinica (English Letters), 1994, 7(1): 31-35.

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INFLUENCE OF AGING ON MICROSTRUCTURE AND TENSILE BEHAVIOR OF Al ALLOY 8090

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