Effect of Precipitation on Cryogenic Toughness in Isothermally Aged Austenitic Stainless Steel

The effect of grain-boundary precipitates on cryogenic impact toughness of two corrosion steels (standard AISI 316 and a steel with a nitrogen additive) is studied. The steels are aged at 600 – 900°C with a hold of up to 1000 min. The KCV impact toughness at –196°C is determined. It is shown that th...

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Veröffentlicht in:	Metal science and heat treatment 2017-03, Vol.58 (11-12), p.707-711
Hauptverfasser:	Saucedo-Muñoz, M. L., Lopez-Hirata, V. M., Avila-Davila, E. O., Villegas-Cardenas, J. D., Gonzalez-Velazquez, J. L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aging (metallurgy) Austenitic stainless steels Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Cryogenic effects Embrittlement Engineering Thermodynamics Grain boundaries Heat and Mass Transfer Impact strength Materials Science Metallic Materials Precipitates Precipitation Precipitation (Meteorology) Steels
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Zusammenfassung:	The effect of grain-boundary precipitates on cryogenic impact toughness of two corrosion steels (standard AISI 316 and a steel with a nitrogen additive) is studied. The steels are aged at 600 – 900°C with a hold of up to 1000 min. The KCV impact toughness at –196°C is determined. It is shown that the impact toughness of the nitrogen-containing steel decreases under cooling after the aging at 700 and 800°C more considerably than that of steel 316 after aging at 800 and 900°C. The causes of the embrittlement of the nitrogen-containing steel are determined.
ISSN:	0026-0673 1573-8973
DOI:	10.1007/s11041-017-0082-4