Effects of Ultrasonic Impact Treatment on Performance of Armor Steel Welded Joints

Abstract:

In this paper, the armor steel welds were treated by ultrasonic impact equipment. The stress, hardness and cross section morphologies of the samples under different impact frequencies were measured by electrolytic polishing machines, X-ray stress analyzer and scanning electron microscopy (SEM). The results show that a clear grain refinement layer is formed on the surface of armored steel weld after ultrasonic impact treatment. Its hardness and residual stress all significantly improve. The ultrasonic impact treatment of different frequencies has greatly affect on ultrasonic impact effect, the higher the frequencies are, the better the ultrasonic impact effects are.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 12-16
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.12
• Online since: August 2014
• Authors: Ge Zhou Li, Xin Yuan Zhou*, Yong Wang, Yan Fei Huang, Wei Zhang
• Keywords: Residual Stress, Structure, Ultrasonic Impact

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