Influence of Frequency on Fretting Fatigue Damage Behavior of Al-Zn-Mg Alloy

Abstract:

nfluence of frequency on fretting fatigue damage behavior of Al-Zn-Mg alloy was studied in this paper. Fretting fatigue lives and damage characteristics of Al-Zn-Mg alloy were researched under different frequencies. Macroscopic tests and microscopic analysis were used to study on influence of frequency on fretting fatigue damage behavior of Al-Zn-Mg alloy. Fatigue lives would be greatly reduced by fretting under the experimental conditions in this paper. With frequency increasing, fretting fatigue lives were firstly decreased and then increased (f=9Hz). Fretting scar, which was the important reason for fretting fatigue crack initiation, was caused by embedding debris; eventually, crack initiated at the edge of the fretting scar. Fretting fatigue fracture is a whole process of crack initiation, propagation and final fracture. And final fracture increased with frequency reducing, which was generally occurred near the center of the fracture.

• Periodical: Advanced Materials Research (Volume 813)
• Pages: 407-412
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.813.407
• Online since: September 2013
• Authors: Dan Liu, Xiao Song Jiang, Pei Qiu Sun, Yue Shen
• Keywords: Al-Zn-Mg Alloy, Frequency, Fretting Fatigue

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