Paper Title:
Rotational Fretting Wear of Ion Nitrided Medium Carbon Steel
  Abstract

The nitrided layer on the surface of LZ50 (0.50% C) carbon steel was prepared by ion nitriding technique and its characterizations were detected by using Vickers hardness tester, profilometer, scanning electric microscope (SEM), optical microscope (OM) and X-ray diffraction (XRD). Rotational fretting is one of basic running modes in contact configuration of ball-on-flat, to which was paid little attention. The rotational fretting wear behaviors of the nitrided layer and its substrate steel were comparatively studied in dry condition under varied angular displacement amplitudes (θ) in range of 0.125º-1º, imposed normal load (Fn) of 20 N and a constant rotational speed of 0.2º/s. The experimental results showed that the nitrided layer presented rough and porous surface and high hardness was mainly consist of ε-Fe2-3N and γ׳-Fe4N phases. Compared with the substrate steel, the nitrided layer had a significant effect on reducing the friction coefficient and improving the fretting wear resistance, though the nitrided layer almost didn’t change the fretting running regimes of the substrate steel. In the partial slip regime, lower friction coefficients and slight damage appeared for the nitrided layer due to the coordination of elastic deformation of contact zones. In the slip regime, the friction coefficient of the nitrided layer was lower than that of the substrate in the initial stage as a result of the preventing plastic deformation by its high hardness surface. The rotational fretting wear mechanism of the nitrided layer in the slip regime was mainly identified as abrasive wear, oxidative wear and delamination. As a result, the nitrided layer presented a better capability for alleviating rotational fretting wear.

  Info
Periodical
Advanced Materials Research (Volumes 97-101)
Edited by
Zhengyi Jiang and Chunliang Zhang
Pages
1532-1541
DOI
10.4028/www.scientific.net/AMR.97-101.1532
Citation
J. Luo, Y.D. Wang, C. Song, J.L. Mo, M. H. Zhu, "Rotational Fretting Wear of Ion Nitrided Medium Carbon Steel", Advanced Materials Research, Vols. 97-101, pp. 1532-1541, 2010
Online since
March 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Min Hao Zhu, Zhong Rong Zhou
Abstract:Fretting wear tests of bonded MoS2 coating under radial and composite fretting mode have been carried out on a new fretting rig. The maximum...
1545
Authors: H.Y. Yu, Zhen Bing Cai, Zhong Rong Zhou, Min Hao Zhu
Abstract:Under simulated human physiological solution, the fretting behaviors of flat cortical bone specimen from fresh human femur in the transverse...
607
Authors: Krzysztof Kubiak, Siegfried Fouvry, Bogdan Wendler
Abstract:Considered as a plague for numerous industrial assemblies, fretting associated with small oscillatory displacements is encountered in all...
105
Authors: Sung Hoon Jeong, Seok Ju Yong, Tae Shik Ahn, Young Ze Lee
Abstract:Friction and wear characteristics between two steel surfaces under fretting condition are investigated experimentally. The fretting damage...
1189
Authors: Min Hao Zhu, Zhong Rong Zhou
Abstract:A complex relative motion of fretting combined by dual motions of radial and tangential fretting was achieved on a modified fretting tester....
868