Physical and tribological properties of Nitrided AISI 316 stainless steel balls

YANG, Shicai, LUO, Quanshun, SUN, Hailing, KITCHEN, Matthew and COOKE, Kevin (2016). Physical and tribological properties of Nitrided AISI 316 stainless steel balls. MATEC Web of Conferences, 77, 01037.

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Link to published version:: 10.1051/matecconf/20167701037


AISI 316 austenitic stainless steel balls (diameters 5.0 and 12.0 mm, typical hardness 250 HV0.3) and flat samples (20×20×2.0 mm) were nitrided by a pulsed glow discharge Ar/N2 plasma. Hardness of the ball surfaces was analyzed using Vickers indentation. Thermal stability of the nitrided balls (diameter 12.0 mm) was studied using a furnace to heat them in air for 8 hours at temperatures up to 700.0 ℃ and then, after cooling to room temperature, the surface hardness of the heated balls was re-measured. Scanning electron microscopy and X-ray diffraction were used to study the microstructures, composition and phase formation of the nitrided sublayers. Unlubricated pin-on-disc wear testing was used to evaluate the wear resistance of nitrided stainless steel balls (5.0 mm diameter) and the results were compared with similar testing on hardened Cr-Steel balls (5 mm diameter with hardness of about 650 HV0.3). All the test results indicated that the nitrided AISI 316 austenitic stainless steel balls have advantages over the hardened Cr-Steel balls in terms of retaining high hardness after heat treatment and high resistance to sliding wear at room temperature under higher counterpart stress. These properties are expected to be beneficial for wide range of bearing applications.

Item Type: Article
Additional Information: Presented at the 2nd International conference on tribology and interface engineering (ICTIE2016), Chongqing, China, June 15-17, 2016.
Research Institute, Centre or Group: Materials and Engineering Research Institute > Materials Analysis and Research Services
Identification Number: 10.1051/matecconf/20167701037
Related URLs:
Depositing User: Quanshun Luo
Date Deposited: 30 Nov 2016 16:01
Last Modified: 23 Nov 2017 23:40

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