PHASE TRANSFORAMTION DURING ANNEALING OF A COLD-ROLLED DUAL PHASE STEEL GRADE

A. Pichler, S. Traint, G. Arnoldner, E. Werner, R. Pippan, P. Stiaszny

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

18 Zitate (Scopus)

Abstract

The transformation behavior of a cold-rolled dual-phase (DP) steel grade during the annealing treatment are investigated in detail. The stages of interest are: recrystallization, dissolution of cementite and formation of austenite during heating and soaking, and the transformation behavior during cooling. For the latter the impact of the cooling rate and an isothermal holding after cooling is studied. Microstructure investigations, dilatometer measurements and the mechanical properties are used to clarify the transformation behavior. During intercritical annealing the austenite fraction is mainly determined by the annealing temperature and to a much lesser extent by the soaking time. A very strong impact on the transformation behavior in cooling results from the microstructure formed during annealing in either the austenite phase field or the austenite-ferrite two-phase field (intercritical annealing). The cooling rate markedly influences the transformation behavior which can be explained by carbon enrichment in the austenite. The best DP structure consisting of a mixture of ferrite and martensite is obtained by cooling with intermediate cooling rates.

OriginalspracheEnglisch
Titel42nd Mechanical Working and Steel Processing Conference Proceedings
Herausgeber (Verlag)Iron and Steel Society
Seiten573-593
Seitenumfang21
ISBN (elektronisch)1886362459, 9781886362451
PublikationsstatusVeröffentlicht - 2000
Veranstaltung42nd Mechanical Working and Steel Processing Conference - Toronto, Kanada
Dauer: 22 Okt. 200025 Okt. 2000

Publikationsreihe

Name42nd Mechanical Working and Steel Processing Conference Proceedings

Konferenz

Konferenz42nd Mechanical Working and Steel Processing Conference
Land/GebietKanada
OrtToronto
Zeitraum22/10/0025/10/00

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