Peculiar mechanical properties of aluminium-magnesium, aluminium-copper and aluminium-zinc alloys at low temperatures

✍ Scribed by V.P. Podkuyko; V.V. Pustovalov

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 634 KB
• Volume: 18
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(78)90019-x

✦ Synopsis

The paper reports on work hardening of solid solutions under tension at a constant rate of 7 x 10 -4 s -1, at temperatures of 1.6 to 300 K. The materials studied were single crystals of AI (0.62-9.0 at % Mg) and polycrystals of AI (0.62-10.4 at % Mg), AI (0.42 at % Zn) and AI (0.62 at % Zn). At very low temperatures, in addition to the softening due to maximum magnesium doping of aluminium, the authors found a softening associated with, first, an anomaly of the temperature dependence on the flow stress, second, an anomaly of the temperature dependence on the relative lengthening, and third, discontinuous flow.