Effect of austenite pancaking on texture formation in a plain carbon and a Nb microalloyed steel
- McGill Univ., Montreal, Quebec (Canada). Dept. of Metallurgical Engineering
The way in which texture development is affected by austenite pancaking was studied in a plain carbon and a niobium steel. Three processing parameters (austenitizing temperature, finish rolling temperature and amount of reduction) were varied, and their influence on the state of the austenite was analyzed. It was found that the presence of niobium, which leads to pancaking of the austenite when low finishing temperatures are employed, strengthened the transformation products produced from the copper, brass, S and Goss orientations in the austenite. Larger reductions resulted in sharper textures, especially in the microalloyed steel. The effect of austenitizing temperature was not particularly strong. Several f.c.c. ideal orientations were transformed according to the Kurdjumov-Sachs relationships, and the b.c.c. products resulting from this analysis are compared with the experimental results. When recrystallized austenite transforms, it is shown that the cube component transforms preferentially into the (001)<110> rotated cube orientation, with lower than expected intensities displayed by the Goss and rotated Goss components. Similar trends are observed with respect to the four main deformation components; these tendencies are interpreted in terms of variant selection and selective growth.
- OSTI ID:
- 6896988
- Journal Information:
- Acta Metallurgica et Materialia; (United States), Vol. 42:11; ISSN 0956-7151
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON STEELS
TEXTURE
LOW ALLOY STEELS
NIOBIUM
METALLURGICAL EFFECTS
CRYSTAL-PHASE TRANSFORMATIONS
GRAIN ORIENTATION
NIOBIUM ALLOYS
ALLOYS
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
METALS
MICROSTRUCTURE
ORIENTATION
PHASE TRANSFORMATIONS
STEELS
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies