GRAIN REFINING OF ( alpha plus alpha prime ) TWO PHASE STAINLESS STEEL.

Setsuo Takaki, Takehisa Seo, Youichi Tokunaga

Research output: Contribution to journalArticle

Abstract

The microduplex process of a Fe-16%Cr-5%Mo-8%Co-2%Ni alloy has been investigated. The alloy has a fully ferritic structure after quenching from 1573 K, then austenite (followed by martensitic transformation during air cooling) decomposes from the ferrite during reheating up to the temperature range of the ( alpha plus gamma ) phase. If the ferrite was cold rolled about 90% prior to reheating, strain-induced precipitation of Laves phase occurs in the temperature range 850-950 K. On 923 K aging, the precipitates play role in suppression of subgrain growth. In the temperature range 1000-1300 K, austenite nucleates along slip bands and deformation twins, resulting in a microduplex structure. At temperatures above 1300 K where recrystallization of ferrite matrix can preferentially occur, the structure coarsened.

Original languageEnglish
Pages (from-to)896-901
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume48
Issue number9
Publication statusPublished - Sep 1984

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Ferrite
ferrites
austenite
Austenite
air cooling
Temperature
heating
Laves phases
temperature
Martensitic transformations
martensitic transformation
edge dislocations
Precipitates
precipitates
Quenching
Aging of materials
quenching
retarding
Cooling
matrices

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

GRAIN REFINING OF ( alpha plus alpha prime ) TWO PHASE STAINLESS STEEL. / Takaki, Setsuo; Seo, Takehisa; Tokunaga, Youichi.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 48, No. 9, 09.1984, p. 896-901.

Research output: Contribution to journalArticle

Takaki, Setsuo ; Seo, Takehisa ; Tokunaga, Youichi. / GRAIN REFINING OF ( alpha plus alpha prime ) TWO PHASE STAINLESS STEEL. In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 1984 ; Vol. 48, No. 9. pp. 896-901.
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