January 20, 2026
Report
AA 7075 Sheet with 700 MPa Strength for Automotive Structural Components (CRADA 520 - Final Report)
Abstract
This is the CRADA final project report of a VTO-LightMAT funded project between PNNL and Fairmount Technologies (FT). FT is exploring a secondary benefit of their stretch roll forming process to produce ultra-high strength aluminum alloy AA 7075 sheets for potential automotive structural applications. Their hypothesis was that cryo-rolling could help achieve strength ~20% greater than the currently available sheet. PNNL performed mechanical testing and characterization to determine the efficacy of various cryo-deformation processes. Data suggest that additional research in cryo-processing and aging heat-treatments is necessary to produce ultra-high strength aluminum alloy AA 7075 sheet.Published: January 20, 2026