Abstract 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.

中文翻译：

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不锈钢的磨损类别调查

摘要 本文重点研究不锈钢中发生的磨损机制，旨在更好地理解微观结构对耐磨损性的影响。本文研究了五种不锈钢，分别是Nitronic60、AISI660、316L、316LN（奥氏体不锈钢）和Uranus45N（双相奥氏体-铁素体）。表征表面形貌和深入的微观结构，以确定磨损现象的后果。宏观和微观尺度的实验研究表明，磨损可以通过几种机制发生。磨损会导致表面上随机分布的粘着磨损点（耐受磨损）、在销钉外围开始的粘着磨损（中度磨损）或磨料磨损和涂抹（严重磨损）。根据这些类别，磨损阈值和严重程度变化很大。研究这些特定机制可以帮助我们预测并最终提高给定材料对的抗磨损性。因此，为了讨论这些磨损类别的可能起源，已经进行了几次微观结构研究。