Quantification of precipitate fraction in maraging steels by X-ray diffraction analysis

Z. Guo*, D. Li, W. Sha

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Quantification of precipitate fraction, a critical step in modelling precipitation hardening, is difficult to carry out for maraging steels because of the small precipitate size and its low volume fraction. A method is proposed in the present work to estimate the precipitate fraction in an 18 wt-%Ni C250 maraging grade based on simple X-ray diffraction (XRD) analysis. The estimation gives reasonable values of precipitate fraction, which increases when aging proceeds. The precipitate formed at 427°C may be of a type that has not been reported before. The method proposed may be applicable to other precipitate hardened alloys. The amount of reverted austenite formed was also estimated when applicable.

Original languageEnglish
Pages (from-to)126-130
Number of pages5
JournalMaterials Science And Technology
Volume20
Issue number1
DOIs
Publication statusPublished - 2004

Keywords

  • Aging
  • Precipitate fraction
  • Precipitation kinetics
  • Steels
  • X-ray diffraction analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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