Microstructural and microchemical aspects of the solid-state decomposition of delta ferrite in austenitic stainless steels

Jogender Singh, G. R. Purdy, G. C. Weatherly

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The solid-state decomposition of delta-ferrite in a 20-10 stainless steel has been followed using optical microscopy, transmission electron microscopy, and high-resolution STEM microanalysis. As the quenching rate was increased, the formation of Widmanstätten austenite was replaced by a plane-front diffusional transformation, with near local equilibrium at the austenite-ferrite interface. Retained ferrite rims, observed at the impingement points of austenite grains, were used to characterize the nature of this transformation. Recent analyses of the thermodynamics of the massive transformation reaction are used to discuss the results.

Original languageEnglish (US)
Pages (from-to)1363-1369
Number of pages7
JournalMetallurgical Transactions A
Volume16
Issue number8
DOIs
StatePublished - Aug 1 1985

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Austenitic stainless steel
Austenite
Ferrite
Decomposition
Microanalysis
Optical microscopy
Quenching
Stainless steel
Thermodynamics
Transmission electron microscopy

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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Microstructural and microchemical aspects of the solid-state decomposition of delta ferrite in austenitic stainless steels. / Singh, Jogender; Purdy, G. R.; Weatherly, G. C.

In: Metallurgical Transactions A, Vol. 16, No. 8, 01.08.1985, p. 1363-1369.

Research output: Contribution to journalArticle

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