Acta Metallurgica Sinica (English Letters) ›› 1993, Vol. 6 ›› Issue (1): 26-29.

• Research paper • Previous Articles     Next Articles

FRACTURE BEHAVIOUR AND FRACTURE TOUGHNESS OF Al-2.5Li-1.3Cu-0.9Mg-0.13Zr ALLOY

WU Yilei QIANG Jun WANG Shuncai LI Yongwei GUO Bichao LIU Bocao Institute of Aeronautical Materials,Beijing Engineer,Institute of Aeronautical Materials,Beijing 100095,China   

  • Received:1993-02-25 Revised:1993-02-25 Online:1993-02-25 Published:2009-10-10

Abstract: The fracture mechanism for Al-2.5Li-1.3Cu-0.9Mg-0.13Zr alloy is quite different from undergone various regimes of heat treatment.With the decrease of solution temperature and the increase of aging temperature,the intergranular delamination and necking fracture on the fracture surface increase and the shearing facture decreases.Thus,the toughness of the alloy may be much improved.

Key words: Al-Li alloy, fracture, structure, heat treatment