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Effect of Ultrasonic Nanocrystal Surface Modification on Wear Property of 316L stainless steel
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[1]LI Yang,LI Jingkai,ZOU Yun,et al.Effect of Ultrasonic Nanocrystal Surface Modification on Wear Property of 316L stainless steel[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):50-55.[doi:10.13705/j.issn.1671-6833.2021.06.005]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 42 Number of periods: 2021 06 Page number: 50-55 Column: Public date: 2021-11-10
Title:
Effect of Ultrasonic Nanocrystal Surface Modification on Wear Property of 316L stainless steel
Author(s):
LI Yang;  LI Jingkai;  ZOU Yun;  LIU Shuhao;  LI Dalei
School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
Keywords:
316L stainless steel;  ultrasonic nanocrystal surface modification;  residual stress;  wear resistance
CLC:
-
DOI:
10.13705/j.issn.1671-6833.2021.06.005
Abstract:
In order to improve the wear resistance of 316L austenitic stainless steel, a gradient nanostructured (GNS) surface layer was formed by ultrasonic nanocrystal surface modification (UNSM) method. The microhardness, residual stress and microstructure of the sample surface were studied by microhardness tester, nanoindentation tester, X-ray residual stress analyzer and scanning electron microscopy. And the wear resistance of gradient nanostructured surface layers with different depth was studied. The results showed that grain refinement existed on the surface of 316L stainless steel after UNSM treatment and the thickness of gradient nanostructure layer increased with the increase of treatment times. Compared to the untreated samples, the surface residual compressive stress increased from -413 MPa to -1 193 MPa, the surface microhardness increased from 306 HV0.2 to 405 HV0.2, and the friction coefficient was the least when the UNSM was treated three times. The results showed that the surface properties of 316L stainless steel were significantly improved by ultrasonic nano-surface modification, and the friction coefficient was reduced.
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