Enhanced plasma nitriding efficiency and properties by severe plastic deformation pretreatment for 316L austenitic stainless steel

Yangyang Lu; Dong Li; Heng Ma; Xiliang Liu; Meihong Wu; Jing Hu

Journal of Materials Research and Technology (Nov 2021)

Enhanced plasma nitriding efficiency and properties by severe plastic deformation pretreatment for 316L austenitic stainless steel

Yangyang Lu,
Dong Li,
Heng Ma,
Xiliang Liu,
Meihong Wu,
Jing Hu

Affiliations

Yangyang Lu: Jiangsu Key Laboratory of Materials Surface Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, 213164, China
Dong Li: Jiangsu Key Laboratory of Materials Surface Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, 213164, China
Heng Ma: Jiangsu Key Laboratory of Materials Surface Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, 213164, China
Xiliang Liu: Jiangsu Key Laboratory of Materials Surface Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Huaide College, Changzhou University, Changzhou, 213164, China
Meihong Wu: School of Computer Engineering, Nanjing Institute of Technology, Nanjing, 211167, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, 213164, China
Jing Hu: Jiangsu Key Laboratory of Materials Surface Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Huaide College, Changzhou University, Changzhou, 213164, China; Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Analysis and Testing Center, NERC Biomass of Changzhou University, Changzhou, 213164, China; Corresponding author.

Journal volume & issue: Vol. 15
pp. 1742 – 1746

Abstract

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In order to enhance the plasma nitriding efficiency and improve the hardness and wear resistance of 316L austenitic stainless steel, severe plastic deformation was adopted prior to plasma nitriding. The microstructure, phase constituents, hardness and wear resistance samples after plasma nitriding were determined by metallographic microscope, X-ray diffractometer, microhardness tester and universal friction and wear tester. The results showed that severe plastic deformation had significant enhancement effect on plasma nitriding efficiency. Under the same plasma nitriding parameters of 420 °C and 4 h, the thickness of nitriding layer was increased from 6.36 μm to 14.10 μm, more than twice thicker enhanced by severe plastic deformation. XRD confirmed that the nitriding layer is consisted of S phase. Meanwhile, the surface hardness was improved from 990HV to 1110 HV and with moderated gradient of cross sectional hardness; more valuably, the wear resistance was greatly enhanced by severe plastic deformation.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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