Aluminum alloy material

Abstract

An aluminum alloy material contains Mg: 7.0% to 10.0% (% by mass, the same applies hereinafter) and Ca: not more than 0.1%, and the aluminum alloy material contains a remainder constituted by aluminum and an inevitable impurity. The aluminum alloy material has a tensile strength of not less than 500 MPa and an elongation of not less than 3% and less than 10%.

1 . An aluminum alloy material containing Mg: 7.0% to 10.0% (% by mass, the same applies hereinafter) and Ca: not more than 0.1%,
 the aluminum alloy material containing a remainder being constituted by aluminum and an inevitable impurity,   the aluminum alloy material having a tensile strength of not less than 500 MPa and an elongation of not less than 3% and less than 10%.   
     
     
         2 . The aluminum alloy material according to  claim 1 , wherein the aluminum alloy material contains Mn: 0.05% to 1.0%. 
     
     
         3 . The aluminum alloy material according to  claim 1 , wherein the aluminum alloy material has a standard deviation of tensile strengths of not more than 20, in a plane defined by a final working direction and a transverse direction of the aluminum alloy material, wherein the tensile strengths are a tensile strength in a 0° direction, which is the final working direction, a tensile strength in a 45° direction forming an angle of 45° with the 0° direction from the final working direction toward the transverse direction, and a tensile strength in a 90° direction forming an angle of 90° with the 0° direction from the final working direction toward the transverse direction. 
     
     
         4 . The aluminum alloy material according to  claim 3 , wherein the aluminum alloy material has a {013}<100> orientation density of not more than 5 and a {011}<100> orientation density of not more than 5, wherein the {013}<100> orientation density and the {011}<100> orientation density are calculated using a crystallite orientation distribution function (ODF). 
     
     
         5 . The aluminum alloy material according to  claim 3 , wherein the aluminum alloy material has a {011}<211> orientation density which is not less than 0.4 times a {112}<111> orientation density, wherein the {011}<211> orientation density is calculated using a crystallite orientation distribution function (ODF). 
     
     
         6 . The aluminum alloy material according to  claim 2 , wherein the aluminum alloy material has a standard deviation of tensile strengths of not more than 20, in a plane defined by a final working direction and a transverse direction of the aluminum alloy material, wherein the tensile strengths are a tensile strength in a 0° direction, which is the final working direction, a tensile strength in a 45° direction forming an angle of 45° with the 0° direction from the final working direction toward the transverse direction, and a tensile strength in a 90° direction forming an angle of 90° with the 0° direction from the final working direction toward the transverse direction. 
     
     
         7 . The aluminum alloy material according to  claim 6 , wherein the aluminum alloy material has a {013}<100> orientation density of not more than 5 and a {011}<100> orientation density of not more than 5, wherein the {013}<100> orientation density and the {011}<100> orientation density are calculated using a crystallite orientation distribution function (ODF). 
     
     
         8 . The aluminum alloy material according to  claim 4 , wherein the aluminum alloy material has a {011}<211> orientation density which is not less than 0.4 times a {112}<111> orientation density, wherein the {011}<211> orientation density is calculated using a crystallite orientation distribution function (ODF). 
     
     
         9 . The aluminum alloy material according to  claim 6 , wherein the aluminum alloy material has a {011}<211> orientation density which is not less than 0.4 times a {112}<111> orientation density, wherein the {011}<211> orientation density is calculated using a crystallite orientation distribution function (ODF). 
     
     
         10 . The aluminum alloy material according to  claim 7 , wherein the aluminum alloy material has a {011}<211> orientation density which is not less than 0.4 times a {112}<111> orientation density, wherein the {011}<211> orientation density is calculated using a crystallite orientation distribution function (ODF).