Intergranular embrittlement of SS 321 alloy due to high temp carburization

  • Anwar Ul-Hamid*
  • , Hani M. Tawancy
  • , Nureddin M. Abbas
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Samples from the failed section of a flange made of type 321 steel were analyzed. Microchemical analysis by conventional energy dispersive X-ray spectroscopy (EDS) in a scanning electron microscope (SEM) was used for material verification. Both the secondary and backscattered modes of SEM were used to characterize the grain structure. Grain structure was revealed by etching specimens in a nital+chromic acid solution. Microhardness measurements were used to evaluate the mechanical strength. Results emphasize the importance of considering means for preventing partial cracking of isobutane. However if this proved to be impractical, replacement of 321 stainless steel with one of the materials adequately resistant to high-temperature carburization was suggested.

Original languageEnglish
Pages (from-to)141-145
Number of pages5
JournalMaterials Technology
Volume20
Issue number3
DOIs
StatePublished - Sep 2005

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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