Article: The wear behaviours of G20CrNi2MoA carburised steel under different temperature Journal: International Journal of Computational Materials Science and Surface Engineering (IJCMSSE) 2020 Vol.9 No.2 pp.134 - 146 Abstract: The wear behaviours of G20CrNi2MoA carburised steel under different temperature was investigated in this work. The microstructure and morphology of the worn surface and cross-section of the specimen were characterised by scanning electron microscope (SEM). It is found that the average friction coefficient increases from 0.464 to 0.563 and the wear rate increases from 3.0 × 10−6 mm3N−1m−1 to 21.1 × 10−6 mm3N−1m−1 with the increase of temperature from room temperature (RT) to 200°C. The percentage of oxygen content on the worn surface increases from 11.66% to 36.12% with the increasing temperature, and the main wear mechanism changed from abrasive wear to oxidation wear. The average diameter of the carbides at the subsurface increases from 0.16 μm to 0.24 μm with the increase of temperature. Additionally, the micro crack and voids can be found around the large carbides at 200°C, resulting in the increase of wear rate. Inderscience Publishers - linking academia, business and industry through research

Title: The wear behaviours of G20CrNi2MoA carburised steel under different temperature

Authors: Songwen Zeng; Dongsheng Qian; Feng Wang

Addresses: School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China; Hubei Engineering Research Center for Green Precision Material Forming, Wuhan 430070, China ' School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China; Hubei Engineering Research Center for Green Precision Material Forming, Wuhan 430070, China ' School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan 430070, China; Hubei Engineering Research Center for Green Precision Material Forming, Wuhan 430070, China

Abstract: The wear behaviours of G20CrNi2MoA carburised steel under different temperature was investigated in this work. The microstructure and morphology of the worn surface and cross-section of the specimen were characterised by scanning electron microscope (SEM). It is found that the average friction coefficient increases from 0.464 to 0.563 and the wear rate increases from 3.0 × 10⁻⁶ mm³N⁻¹m⁻¹ to 21.1 × 10⁻⁶ mm³N⁻¹m⁻¹ with the increase of temperature from room temperature (RT) to 200°C. The percentage of oxygen content on the worn surface increases from 11.66% to 36.12% with the increasing temperature, and the main wear mechanism changed from abrasive wear to oxidation wear. The average diameter of the carbides at the subsurface increases from 0.16 μm to 0.24 μm with the increase of temperature. Additionally, the micro crack and voids can be found around the large carbides at 200°C, resulting in the increase of wear rate.

Keywords: carburised steel; wear behaviours; wear rate; wear mechanism; carbides.

DOI: 10.1504/IJCMSSE.2020.109562

International Journal of Computational Materials Science and Surface Engineering, 2020 Vol.9 No.2, pp.134 - 146

Received: 14 Dec 2019
Accepted: 17 Mar 2020
Published online: 15 Sep 2020 *

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Title: The wear behaviours of G20CrNi2MoA carburised steel under different temperature

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