Development Program for Natural Aging Aluminum Casting Alloys

Sigworth, Dr. Geoffrey K.

GKS Engineering Services (United States)

关键词: Aluminium;    Aging;    Alloys;    36 Materials Science;    Casting;   

DOI  :  10.2172/840824
RP-ID  :  NONE
RP-ID  :  FC07-02ID14230
RP-ID  :  840824

美国|英语

来源: UNT Digital Library

【 摘 要 】

A number of 7xx aluminum casting alloys are based on the ternary Al-Zn-Mg system. These alloys age naturally to high strength at room temperature. A high temperature solution and aging treatment is not required. Consequently, these alloys have the potential to deliver properties nearly equivalent to conventional A356-T6 (Al-Si-Mg) castings, with a significant cost saving. An energy savings is also possible. In spite of these advantages, the 7xx casting alloys are seldom used, primarily because of their reputation for poor castibility. This paper describes the results obtained in a DOE-funded research study of these alloys, which is part of the DOE-OIT ''Cast Metals Industries of the Future'' Program. Suggestions for possible commercial use are also given.