超声滚压技术在表面强化中的研究与应用进展

超声滚压加工是一种复合特种加工技术，其综合了传统滚压和超声加工的材料去除方式，在增加残余应力提高表面完整性、抗疲劳、抗腐蚀、耐磨损等方面具有显著的优势。自该技术应用至今，国内外学者做了大量有关超声滚压工艺及机理方面的研究，并在多种重要金属材料及关键零部件中应用。本文首先总结了国内外滚压装置的发展现状；其次论述了超声滚压机理研究的主要方法（理论法、有限元法和实验法）研究进展，指出以上3种方法的优缺点及待解决问题；随后总结了超声滚压对表面完整性（包括微观结构、表面形貌、微观硬度、残余应力）的影响规律，超声滚压对提高抗疲劳特性及其他性能影响，并指出超声滚压目前存在的不足及尚待解决的问题；最后就超声滚压技术进一步研究和发展方向进行展望，从而为曲面的超声滚压制造提供一定的参考。

Ultrasonic rolling technology in surface strengthening:Progress in research and applications

Ultrasonic Surface Rolling Process (USRP) which combines material removal of ultrasonic machining and that of traditional rolling is a mechanical type of nontraditional hybrid machining technology. It has significant advantages in the improvement of surface integrity, anti-fatigue, corrosion resistance, and wear resistance. Since the invention of USPR, a large number of studies on processing technologies and mechanisms have been conducted. It is also extensively applied to important metal materials and key parts. In this paper, the development of the surface rolling equipment at home and abroad is firstly summarized; then, main research methods of the URSP mechanism (theoretical method, finite element method, and experimental method) are discussed, with their advantages and disadvantages pointed out; the impacts of USRP on surface integrity (including microstructure, surface morphology, microhardness, residual stress) and on fatigue resistance (including the other properties) improvement are also summarized. Finally, future research and development tendency of USRP are predicted, providing reference for the ultrasonic rolling of curved surface.