Ultrasonic surface treatment techniques based on cold working: a review

This paper reviews the development of ultrasonic surface treatment techniques, including ultrasonic shot peening, ultrasonic peening treatment, and ultrasonic surface rolling techniques. Ultrasonic surface treatment techniques are effective technologies to induce severe plastic deformation and improve the mechanical properties and surface integrity of components. In recent years, numerous researchers have explored various ultrasonic surface treatment techniques to improve surface integrity using available facilities and equipment. Besides, due to the limitations in industrial applications, these techniques are expanding to improve various surfaces with specific geometric shapes. Despite the wide range of techniques in this field, this review focuses solely on industrial applications based on cold working. This article briefly explains each technique and its advantages and disadvantages compared to other techniques. Applications of these techniques are presented with descriptive illustrations, and their effects on the surface characteristics of ferrous and non-ferrous materials are summarized. Based on this, the existing shortcomings and limitations are discussed in this paper, and prospects for ultrasonic surface treatment approaches in future studies are considered. The present review enhances the knowledge of ultrasonic surface treatment techniques and provides a quick reference for the appropriate usage of each technique in relevant applications.