Galling categories investigations in stainless steels

This paper focuses on the galling mechanisms occurring in stainless steels and aims to provide a better comprehension of the effects of microstructure on galling resistance. Five stainless steels are studied in this paper, namely Nitronic60, AISI660, 316L, 316LN (austenitic stainless steels) and Ura...

Full description

Saved in:
Bibliographic Details
Published in:Wear 2020-11, Vol.460-461, p.203413, Article 203413
Main Authors: Lesage, T., Bouvier, S., Oudriss, A., Chen, Y., Risbet, M., Mazeran, P.-E.
Format: Article
Language:English
Subjects:
Abrasive wear
Adhesive wear
Austenitic stainless steels
Categories
Engineering Sciences
Galling
Galling mechanisms
Materials
Mechanics
Mechanics of materials
Microstructure
Stainless steel
Stainless steels
Surface topography
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper focuses on the galling mechanisms occurring in stainless steels and aims to provide a better comprehension of the effects of microstructure on galling resistance. Five stainless steels are studied in this paper, namely Nitronic60, AISI660, 316L, 316LN (austenitic stainless steels) and Uranus45 N (duplex austenite-ferrite). Both surface topography and in-depth microstructure are characterized in order to determine the consequences of galling apparition. Experimental investigations at macroscopic and microscopic scales show that galling can occur following several mechanisms. Galling leads to either adhesive wear spots randomly distributed on the surface (tolerant galling), adhesive wear initiated on the periphery of the pin (moderate galling) or abrasive wear and smearing (severe galling). Depending on these categories, the galling threshold and severity are highly variable. Studying these specific mechanisms can help us predict and eventually increase galling resistance for a given material couple. Thus, several microstructural investigations have been performed in order to discuss about the possible origins of these galling categories. •Galling resistance investigations.•Galling mechanisms.•Microstructure of galled samples.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2020.203413