PREVENTION OF THE INTERGRANULAR FRACTURE IN IRON-PHOSPHORUS ALLOYS BY CARBON.

Shigeru Suzuki, Minoru Obata, Kenji Abiko, Hiroshi Kimura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Fe-P alloys with up to 0. 67 wt% phosphorus show intergranular fracture when quenched from 1,073 K. Addition of carbon up to about 0. 01 wt% fracture caused by grain boundary segregation of phosphorus and lowers the ductile-brittle transition temperature (DBTT). This effect is due to segregation of carbon to grain boundaries. Aging at 873 K of a quenched specimen with 0. 52%P and 0. 0008%C reduces DBTT and increases the grain boundary segregation of carbon but does not affect the degree of grain boundary segregation of phosphorus. Segregation of carbon increases grain boundary cohesion and prevents fracture without removing phosphorus from the grain boundaries.

Original languageEnglish
Pages (from-to)2262-2268
Number of pages7
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume70
Issue number16
DOIs
Publication statusPublished - 1984 Jan 1

ASJC Scopus subject areas

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

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