Investigation of microstructural changes occurring during warm working of manganese partitioned dual phase steel

E. Navara, C. H. Li, David Smith

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents results from studies using transmission and high resolution electron microscopy of as received and warm worked manganese partitioned dual phase steel. It is found that a growing manganese enriched austenite grain shares two distinctly different boundaries with ferrite: (a) a stationary coherent boundary, replacing a stretch of the original ferrite/ferrite boundary, and (b) a migrating non-coherent boundary. This finding gives full support to the previously described mechanism of the nucleation and growth of the manganese enriched austenite. The structure of the warm worked steel consists of recovered ferrite, strengthened by substructure, and fine martensitic lathes, separated by low angle boundaries, which have resulted from the transformation of deformed non-recrystallised austenite grains.

Original languageEnglish (US)
Pages (from-to)151-156
Number of pages6
JournalMaterials Science and Technology (United Kingdom)
Volume6
Issue number2
DOIs
StatePublished - 1990

Fingerprint

Steel
Manganese
Ferrite
manganese
steels
Austenite
ferrites
austenite
Lathes
lathes
High resolution electron microscopy
substructures
Nucleation
electron microscopy
nucleation
high resolution

ASJC Scopus subject areas

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

Cite this

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AU - Li, C. H.

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AB - This paper presents results from studies using transmission and high resolution electron microscopy of as received and warm worked manganese partitioned dual phase steel. It is found that a growing manganese enriched austenite grain shares two distinctly different boundaries with ferrite: (a) a stationary coherent boundary, replacing a stretch of the original ferrite/ferrite boundary, and (b) a migrating non-coherent boundary. This finding gives full support to the previously described mechanism of the nucleation and growth of the manganese enriched austenite. The structure of the warm worked steel consists of recovered ferrite, strengthened by substructure, and fine martensitic lathes, separated by low angle boundaries, which have resulted from the transformation of deformed non-recrystallised austenite grains.

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