Effect of nitrogen on high temperature dry sliding wear of 316L (N) stainless steel.

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Bibliographic Details
Title:	Effect of nitrogen on high temperature dry sliding wear of 316L (N) stainless steel.
Authors:	Parthasarathi, N. L.^1,2 (AUTHOR) nlpartha@igcar.gov.in, Jose, Bibin³ (AUTHOR), Davinci, M. Arvinth^1,2 (AUTHOR), Arivazhagan, N.⁴ (AUTHOR), Vasudevan, M.² (AUTHOR)
Source:	Journal of Mechanical Science & Technology. Oct2024, Vol. 38 Issue 10, p5449-5458. 10p.
Subjects:	Liquid metal fast breeder reactors, Austenitic stainless steel, Sliding wear, Wear resistance, Liquid sodium
Abstract:	This paper investigates the effect of nitrogen content on the tribological behavior of 316L (N) stainless steel at three different nitrogen levels: 0.07, 0.11 and 0.22 wt. percent. AISI 316L (N), an austenitic stainless steel, is the primary structural material used in sodium-cooled prototype fast breeder reactors (PFBR). Wear tests were conducted using a pin-on-disc tribometer, with a sliding velocity of 0.8 m/s and a normal load of 40 N, over a sliding distance of 1000 m. The experiments were carried out against an Inconel 718 counter face material at four different temperatures: room temperature, 200 °C, 400 °C and 550 °C. The dry sliding wear tests were performed in a vacuum of 10–6 torr to simulate wear in liquid sodium. The investigation covered the properties of the three grades of stainless steel, including microstructure, hardness, X-ray diffraction (XRD), specific wear rate, wear resistance and wear coefficient. This study also compared three different wear models a weight loss model, an ASTM model, and geometric models highlighting the reported anomalies. Scanning electron microscope (SEM) photographs of the worn surfaces were used to assess the severity and mode of wear. It was discovered that wear resistance decreases as temperature increases due to the material's thermal softening, and that the stainless steel with 0.07 wt% nitrogen exhibited the best wear resistance among the tested compositions. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	This paper investigates the effect of nitrogen content on the tribological behavior of 316L (N) stainless steel at three different nitrogen levels: 0.07, 0.11 and 0.22 wt. percent. AISI 316L (N), an austenitic stainless steel, is the primary structural material used in sodium-cooled prototype fast breeder reactors (PFBR). Wear tests were conducted using a pin-on-disc tribometer, with a sliding velocity of 0.8 m/s and a normal load of 40 N, over a sliding distance of 1000 m. The experiments were carried out against an Inconel 718 counter face material at four different temperatures: room temperature, 200 °C, 400 °C and 550 °C. The dry sliding wear tests were performed in a vacuum of 10–6 torr to simulate wear in liquid sodium. The investigation covered the properties of the three grades of stainless steel, including microstructure, hardness, X-ray diffraction (XRD), specific wear rate, wear resistance and wear coefficient. This study also compared three different wear models a weight loss model, an ASTM model, and geometric models highlighting the reported anomalies. Scanning electron microscope (SEM) photographs of the worn surfaces were used to assess the severity and mode of wear. It was discovered that wear resistance decreases as temperature increases due to the material's thermal softening, and that the stainless steel with 0.07 wt% nitrogen exhibited the best wear resistance among the tested compositions. [ABSTRACT FROM AUTHOR]
ISSN:	1738494X
DOI:	10.1007/s12206-024-0918-y