超声表面滚压技术及其组合工艺现状

概述了USRP在磨损、疲劳以及腐蚀领域的防护现状,并对其防护机理进行了讨论。同时归纳了USRP技术存在的问题,比如当表面强化层的塑性变形程度达到一定的极限时,不仅很难进一步提高材料性能,继续加工更会导致起皱、开裂等表面缺陷的产生,最终致使材料性能恶化。在此基础上,重点综述了组合USRP工艺的研究进展,并按照组合工艺中USRP技术的时间顺序,分为前端组合(超声滚压–等离子渗技术、超声滚压–物理气相沉积技术、超声滚压–微弧氧化技术等)、后端组合(热处理–超声滚压技术、激光冲击–超声滚压技术、激光熔覆–超声滚压技术、激光选区熔化–超声滚压技术等)以及同步复合工艺(电脉冲辅助超声滚压技术、温度场辅助超声滚压技术等)。最后,就USRP技术及其组合工艺进一步的研究和发展方向进行了展望,为USRP后续研究及应用提供技术参考。

State of the Art of Ultrasonic Surface Rolling Technology and Its Combination Technology

Metal materials, known as "industrial skeleton", are widely used in communication, electronics, transportation, medical, and other fields because of their good physical, chemical, and mechanical properties. However, corrosion, abrasion, fatigue, and other failure modes generally occur on the metal surface, which greatly limits the service life and effect of the material. As a new and environment-friendly surface strengthening technology, the ultrasonic surface rolling process (USRP) has become a research focus because of its great application potential in the field of material surface protection. The work aims to introduce the protection status of USRP in the field of wear, fatigue, and corrosion in China and internationally, and discuss the mechanism of USRP on the surface protection of metal materials.