Cast, hot-worked product of al-mg-si aluminum alloy and production method therefor

Abstract

To provide a cast, hot-worked product of an Al—Mg—Si aluminum alloy which is configured to suppress the development of cracks when a certain tensile load is applied in high humidity, and a method for producing the cast, hot-worked product. A cast, hot-worked product of an Al—Mg—Si aluminum alloy, wherein the aluminum alloy comprises Si and Cu, and wherein an Si/Cu ratio, which is a ratio of a mass % of the Si to a mass % of the Cu, is less than 3.3.

1 . A cast, hot-worked product of an Al—Mg—Si aluminum alloy,
 wherein the aluminum alloy comprises Si and Cu, and 
 wherein an Si/Cu ratio, which is a ratio of a mass % of the Si to a mass % of the Cu, is less than 3.3. 
 
     
     
         2 . A method for producing the cast, hot-worked product of the Al—Mg—Si aluminum alloy defined by  claim 1 ,
 wherein the method comprises obtaining an ingot by casting the Al—Mg—Si aluminum alloy, and obtaining the cast, hot-worked product by hot-working the ingot, and 
 wherein a reduction of the cast, hot-worked product in the hot working is 10% or more. 
 
     
     
         3 . The method for producing the cast, hot-worked product according to  claim 2 , wherein the hot working is hot forging.