Abstract
Ultrasonic surface rolling processing (USRP) with different rolling times (2, 6 and 10 times) was introduced to the Cr12MoV steel. The surface integrity and wear resistance after USRP were investigated. The microstructural features of the surface deformed layer were characterized by some microscopic analysis methods(scanning electron microscopy, X-ray diffraction, X-Ray residual stress analyzer and microhardness analysis). Multifunctional friction and wear testing machine was used to test the wear properties of different treated samples along the rolling direction. Results indicate that after two times of USRP, the grain of the plastic deformation layer of the material is significantly refined, moreover, the surface hardness, residual compressive stress and surface roughness were improved. However, the carbon pit produced by carbide exfoliation could not be filled in time, which becomes the source of the layered exfoliation crack and reduced the strengthening effect. With the increase of rolling times, the thickness of plastic deformation layer increased and the surface carbide decreased, which is helpful to inhibit the crack initiation and propagation, effectively improving the phenomenon of layered spalling and improve the wear resistance of material.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
