The influence of vanadium on the static recrystallization of hot deformed austenite and on induced precipitation kinetics

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90289-5· OSTI ID:7029609

Medina, S F ^[1]; Mancilla, J E ^[2]

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1. Centro Nacional de Investigaciones Metallurgicas, Madrid (Spain)
2. Univ. Autonoma de Puebla (Mexico)

Few studies have dealt with the static recrystallization of austenite in microalloyed steels with only vanadium and in none of them has Avrami's equation been modeled for this type of steels. The determination of the Static Recrystallization Critical Temperature (SRCT), or the temperature at which the inhibition of static recrystallization begins as a consequence of the induced precipitation, is of great importance in hot rolling, as a rolling whose final passes take place at temperature lower than SRCT will give rise to an accumulated strain of the austenite (pancaking). The consequence of this will be that the ferrite grain which is obtained after the [gamma] [yields] [alpha] transformation will be much smaller than if the successive passes were carried out at temperatures above SRCT. In this work the static recrystallization kinetics and induced precipitation kinetics of three microalloyed steels with 5 are studied using torsional tests. The SRCT is determine for each one of them and Avrami's equation is expressed both in the range of temperatures above SRCT and the range of temperatures between SRCT and the temperature of the [gamma] [yields] [alpha] transformation (Ar[sub 3]). These equations, together with others already published, make it possible to calculate the residual strain and the austenite grain size at the end of any hot rolling.

• OSTI ID: 7029609
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:3; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
AUSTENITE
CARBON ADDITIONS
CRYSTAL-PHASE TRANSFORMATIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LOW ALLOY STEELS
METALLURGICAL EFFECTS
METALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
RECRYSTALLIZATION
STEELS
TRANSITION ELEMENTS
VANADIUM