Strain-aging of aluminum and aluminum-magnesium alloys at liquid-air temperatures

✍ Scribed by A.R.C Westwood; T Broom

• Publisher: Elsevier Science
• Year: 1957
• Weight: 701 KB
• Volume: 5
• Category: Article
• ISSN: 0001-6160
• DOI: 10.1016/0001-6160(57)90133-5

✦ Synopsis

Measurements of increases in flow stress of polycrystalline

superpure aluminum and aluminummagnesium alloys following aging at liquid-air temperatures after prior deformation at the same temperature indicate that some form of strain-aging occurs. The apparent activation energy for this process is 0.1 eV. It is probable that the strain-aging observed in superpure aluminum is caused by the migration of interstitials to dislooations.

In aluminum-magnesium alloys an additional contribution arises from local redistribution of solute atoms.