先进喷丸表面改性技术研究进展

综述了先进喷丸表面改性技术研究现状及应用,阐述了微粒子喷丸、激光喷丸、超声/高能喷丸、高压水射流喷丸的基本原理,与传统喷丸对比发现,微粒子喷丸可提高材料的耐磨性,激光喷丸可精确控制定位,超声/高能喷丸可实现材料表面纳米化,高压水射流喷丸可承受半柔性冲击并减少应力集中.此外,对各种喷丸技术综合分析并进行对比,认为超声喷丸、复合喷丸(高能-微粒喷丸,激光-机械喷丸)综合性能最佳,并展望了未来应重点开展的工作.

Development on surface modification technology of advanced shot peening

As an effective surface strengthening process, shot peening has been widely used in surface engineering area. This paper is to review the current research status and applications of shot peening as an advanced surface modification technology. The fundamental of microshot peening, laser peening, ultrasonic/high energy shot peening and high pressure water jet shot peening are introduced and the advantages and disadvantages of these techniques are also summarized. Compared with conventional shot peening, wear resistance of material can be promoted by microshot peening, laser peening usually has the highest special resolution, nanocrystallization on the surface of material can be realized by using ultrasonic/high energy shot peening and stress concentration can be reduced by high pressure water jet shot peening which features a half flexible impact. Furthermore, it could be concluded that ultrasonic peening and combined peening (high energy-microshot peening, laser-mechanical shot peening) can provide better performance for the treated surface than any other single technique. In the end, the developing trend and promising research topics are also suggested for future studies.