Corrosion Resistance of Low-Temperature, Surface-Hardened Stainless Steel

被引:0
|
作者
Oberste-Lehn, Ulli [1 ]
Beamer, Chad [2 ]
Guempel, Paul [3 ]
Karl, AndreAs [4 ]
机构
[1] Bodycote Specialist Technol, Dusseldorf, Germany
[2] Bodycote Specialist Technol, London, OH USA
[3] Univ Appl Sci, HTWG Konstanz, Constance, Germany
[4] Bodycote Specialist Technol, Landsberg, Germany
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中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
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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页码:42 / 46
页数:5
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