Method of producing a shaped Al alloy panel for aerospace applications

摘要

A method of producing a shaped aluminum alloy panel, preferably for aerospace or automotive applications, from 5000-series alloy sheet. The method includes: providing a sheet made of 5000-series alloy having a thickness of about 0.05 to 10 mm and a length in the longest dimension of at least 800 mm; and stretch forming the sheet at a forming temperature between −100° C. and −25° C., to obtain a shaped aluminum alloy panel. A shaped article formed by the above method is also provided.

主权项

1. A method of producing a shaped aluminium alloy panel from 5000-series aluminium alloy sheet, the method comprising:
providing a sheet made of 5000-series alloy having a thickness of about 0.05 to 10 mm and a length in a longest dimension of at least 800 mm; and stretch forming the sheet at a target forming temperature between −90° C. and −25° C., to obtain the shaped aluminium alloy panel, wherein the shaped aluminium alloy part is not showing any Portevin-Le-Chatelier (PLC) lines and has a tensile strength in L-T direction of above 350 MPa, and an elongation above 7%.