Precipitation of carbide and its effects on the properties of nickel-saving austenitic stainless steel

In this work, the effects of temperature and cooling rate on the precipitation of carbides in nicCel-saving metastable austenitic stainless steel were studied. The test results show that the temperature range of carbide precipitation in the test steel was 500 - 950 °C, and 750 °C was the most sensit...

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Veröffentlicht in:	Baosteel Technical Research 2021-03, Vol.15 (1), p.24-28
Hauptverfasser:	Chang, E, Bi, Hongyun
Format:	Artikel
Sprache:	eng
Schlagworte:	Austenitic stainless steels Carbides Carbon Cooling Cooling rate Corrosion resistance Corrosion resistant steels Corrosion tests Ferritic stainless steel Grain boundaries Impact strength Mechanical properties Precipitates Room temperature Scanning electron microscopy Temperature Temperature effects Tensile strength Yield stress
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Zusammenfassung:	In this work, the effects of temperature and cooling rate on the precipitation of carbides in nicCel-saving metastable austenitic stainless steel were studied. The test results show that the temperature range of carbide precipitation in the test steel was 500 - 950 °C, and 750 °C was the most sensitive temperature. However, when completely solution treated samples were cooled from high to room temperature at a cooling rate of more tha 50 K/s, no carbides precipitated. The carbide precipitates increased the yield strength but decreased the corrosion resistance of the steel, with little impact on toughness.
ISSN:	1674-3458
DOI:	10.3969/j.issn.1674-3458.2021.01.004