Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (2): 151-154.

• Research paper • Previous Articles    

INFLUENCE OF COMPOSITION AND DISPERSOID ON FATIGUE FRACTURE BEHAVIOUR OF Al-Mg-Si ALLOYS

JIANG Daming HONG Bande LEI Tingquan (T.C.LEI) Harbin Institute of Technology,Harbin,China Lecturer,Analysis and Measurement Center,Harbin Institute of Technology,Harbin 150006   

  • Received:1991-04-25 Revised:1991-04-25 Online:1991-04-25 Published:2009-10-10

Abstract: A study was made of the fatigue fracture behaviour under different aging conditions of two Al-Mg-Si alloys with different chemical compositions and dispersoid contents.The dispersoid phase can alter the mode of the deformation uniformity of alloys.The dispersoid it- self may decohere from the dispersoid/matrix interface under cyclic stress to form small dimples.

Key words: AI-Mg-Si alloy, dispersoid, fatigue, fracture