Research progress and development trend of strengthening-toughening of ultra-high strength 7 × × × aluminum alloy

The research progress and development situation of strengthening-toughening of ultra high strength 7 × × × aluminum alloy both in domestic and foreign countries have been fully summarized.The various new technologies for improving ultra high strength aluminum alloys properties have been commented.The increasing way and development tends for strengthening-toughening of the ultra-high strength 7 × × × aluminum alloy have been discussed.The development orientation for optimizing composition,improving preparation technology and developing new heat treatment technology have been prospected for improving the strengthening-toughening of ultra-high strength aluminum alloys.The important development efforts for future researching have been generalized.