Investigation of the Fatigue Behavior of AlMg4.5Mn (EN AW-5083) in the Temperature Range -60 °C < T < 20 °C

Abstract:

Stress-controlled load increase and constant amplitude tests have been carried out in a temperature range of -60°C < T < 20°C at the aluminium alloy AlMg4.5Mn (EN AW-5083). Therefore a recently developed climate chamber which operates with liquid nitrogen was mounted on a servo-hydraulic fatigue testing machine to realize the required low temperatures. Beside conventional mechanical hysteresis measurements, electrical resistance and temperature measurements are used to characterize the fatigue behavior. Furthermore, with these methods, the endurance limit was successfully estimated in a load increase test. Woehler curves were determined with constant amplitude tests at different temperatures. The conventionally determined endurance limit corresponds with the value from the load increase test.

• Periodical: Materials Science Forum (Volume 690)
• Pages: 290-293
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.690.290
• Online since: June 2011
• Authors: Thomas Kieczka, Eberhard Kerscher
• Keywords: AlMg4.5Mn (EN AW-5083), Aluminium Alloy, Cyclic Deformation Behavior, Fatigue, Lifetime, Light Metal, Low-Temperature, Woehler Curve

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