Method of manufacturing formed component for aircraft use made of aluminum alloy and formed component for aircraft use

Abstract

A method of manufacturing a formed component for aircraft use according to the present invention includes: subjecting a material made of an aluminum alloy to solution heat treatment; then forming the material into a predetermined shape under cold working conditions; and thereafter subjecting the material to artificial age-hardening treatment. Under the cold working, the material is formed into the predetermined shape while a strain corresponding to a temper T8 is being imparted to the material by a roll forming apparatus. This makes it possible to manufacture a formed component for aircraft use made of an aluminum alloy in a T8 state at a lower cost than conventional art.

1 . A method of manufacturing a formed component for aircraft use made of an aluminum alloy, the method comprising:
 subjecting a material made of an aluminum alloy to solution heat treatment; then   forming the material into a predetermined shape under cold working conditions; and thereafter   subjecting the material to artificial age-hardening treatment, wherein   under the cold working, the material is formed into the predetermined shape while a strain corresponding to a temper T8 is being imparted to the material by a roll forming apparatus.   
     
     
         2 . The method of manufacturing a formed component for aircraft use according to  claim 1 , wherein
 the roll forming apparatus is a multi-stage roll forming apparatus.   
     
     
         3 . The method of manufacturing a formed component for aircraft use according to  claim 2 , wherein
 a clearance of at least some of rolls of the multi-stage roll forming apparatus is adjusted to be less than a thickness of the material to impart a compressive strain to the material.   
     
     
         4 . The method of manufacturing a formed component for aircraft use according to  claim 1 , wherein
 the strain imparted to the material when the forming of the material is performed is a compressive strain or a tensile strain.   
     
     
         5 . The method of manufacturing a formed component for aircraft use according to  claim 1 , wherein
 the aluminum alloy is an aluminum-lithium alloy containing lithium.   
     
     
         6 . The method of manufacturing a formed component for aircraft use according to  claim 1 , wherein
 the formed component for aircraft use is a frame or a stringer.   
     
     
         7 . A formed component for aircraft use made of an aluminum alloy, the formed component being obtained by the method of manufacturing a formed component for aircraft use according to  claim 1 .