Effect of precipitation on cryogenic toughness in isothermally aged austenitic stainless steel

M. L. Saucedo-Muñoz, V. M. Lopez-Hirata, E. O. Avila-Davila, J. D. Villegas-Cardenas, J. L. Gonzalez-Velazquez

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)707-711
Number of pages5
JournalMetal Science and Heat Treatment
Volume58
Issue number11-12
DOIs
StatePublished - 1 Mar 2017

Keywords

  • Aging
  • Austenitic stainless steel
  • Electron microscopy
  • Mechanical properties

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