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Title: Mechanical Characterization and Corrosion Testing of X608 Al Alloy

This paper describes the mechanical characterization and corrosion testing of X608 Al alloy that is being considered for A-pillar covers for heavy-duty truck applications. Recently, PNNL developed a thermo-mechanical process to stamp A-pillar covers at room temperature using this alloy, and the full-size prototype was successfully stamped by a tier-1 supplier. This study was conducted to obtain additional important information related to the newly developed forming process, and to further improve its mechanical properties. The solutionization temperature, pre-strain and paint-bake heat-treatment were found to influence the alloy’s fabricability and mechanical properties. Natural aging effect on the formability was investigated by limiting dome height (LDH) tests. Preliminary corrosion experiments showed that the employed thermo-mechanical treatments did not significantly affect the corrosion behavior of Al X608.
Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
1253873
Report Number(s):
PNNL-SA-113866
VT0505000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Book
Resource Relation:
Related Information: Light Metals 2016, 145-150
Publisher:
E. Williams; John Wiley & Sons, Inc., Hoboken, NJ, United States(US).
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
Aluminum; Al-6xxx; class-8 truck; A-pillar cover; light-weighting; paint-bake; formability; corrosion