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Low-temperature surface-hardened stainless steel corrosion resistance

  • Thermochemical surface hardening is used to overcome the weak mechanical performance of austenitic and duplex stainless steels. Both low-temperature carburizing and nitrocarburizing can improve the hardness, wear, galling, and cavitation resistance, while maintaining their good corrosion resistance. Therefore, it is crucial to not form chromium-rich precipitates during hardening as these can deteriorate the passivity of the alloy. The hardening parameters, the chemical composition of the steel, and the manufacturing route of a component determine whether precipitates are formed. This article gives an overview of suitable alloys for low-temperature surface hardening and the performance under corrosive loading.

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Author:Ulli Oberste-Lehn, Chad Beamer, Paul GümpelGND, Andreas Karl
Parent Title (English):Materials Performance : MP
Document Type:Article
Year of Publication:2019
Corporation:National Association of Corrosion Engineers
Release Date:2020/01/16
Tag:Stainless steel; Corrosion resistance; Low-temperature surface-hardening
First Page:42
Last Page:46
Relevance:Peer reviewed Publikation in Master Journal List
Open Access?:Nein