| Autor: |
Luo, Xiaoshuang, Jia, Dan, Zhan, Shengpeng, Tu, Jiesong, Li, Yinhua, Yang, Tian, Duan, Haitao |
| Zdroj: |
Metals & Materials International; Aug2024, Vol. 30 Issue 8, p2282-2295, 14p |
| Abstrakt: |
Ultrasonic surface rolling processing (USRP) was applied on 4Cr13 stainless steel. Microstructure observations of the USRP sample surface indicate that the processing can exhibit significant plastic deformation, with a maximum depth of about 253.4 μm, and refine the average surface grain to 0.5 μm. In contrast to the untreated sample, the USRP sample has a minimum surface roughness Ra of 80.1 nm, which is 93.1% lower. Tests of mechanical properties showed a 37.0% increase in the maximum surface microhardness for USRP samples. The residual compressive stress can be as high as-484.4 MPa. It has also been found that USRP can enhance tribological properties under different normal loads. Adhesion oxidation wear dominate in the process of dry-sliding friction based on the surface/interface analysis. The improvement in antifriction and wear resistance is mainly attributed to the reduction in surface roughness and the increase in mechanical properties after USRP treatment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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