高周波グロー放電発光分析法を用いた鉄固溶体におけるホウ素の固溶限測定

Translated title of the contribution: Evaluation of Boron Solubility in Iron Solid Solution by Radio-frequency Glow-discharge Optical Emission Spectroscopy

Nobuaki Sekido, Yuta Kimura, Takumi oSanai, Toshimi Miyagi, Hiroshi Numakura, Kyosuke yoShimi

Research output: Contribution to journalArticle

Abstract

The solubility of boron in α- and γ-iron solid solutions was investigated by diffusion-couple experiments in the Fe-B, Fe-Ni-B, and Fe-Si-B systems. Diffusion couples composed of iron foils and Fe2B bulk specimens were annealed at various temperature between 750ºC and 1100ºC, and the concentration profile of boron from the end-surface of the iron part were measured by the radio-frequency glow-discharge optical emission spectroscopy (rf-GD-OES). It was found that rf-GD-OES was effective in analyzing boron of low concentrations in iron. The solubility limit of boron in α- and γ-iron determined by analyzing the concentration profiles in the diffusion couples was found to agree with that reported by Cameron and Morral for α-iron, and that by Brown et al. for γ-iron. It was also suggested that the invariant reaction between α-iron, γ-iron and Fe2B was a eutectoid reaction, as had been indicated by Cameron and Morral.

Translated title of the contributionEvaluation of Boron Solubility in Iron Solid Solution by Radio-frequency Glow-discharge Optical Emission Spectroscopy
Original languageJapanese
Pages (from-to)2-11
Number of pages10
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume106
Issue number6
DOIs
Publication statusPublished - 2020 Jun

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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