Texture homogeneity and stability in severely warm-rolled and annealed ultrafine pearlite

Autor:	Rajib Saha, S. R. Reddy, S. Narayanswamy, Pinaki Prasad Bhattacharjee
Rok vydání:	2019
Předmět:	010302 applied physics Equiaxed crystals Materials science Annealing (metallurgy) Cementite Mechanical Engineering Metallurgy 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Surface shear 01 natural sciences chemistry.chemical_compound chemistry Mechanics of Materials 0103 physical sciences Homogeneity (physics) General Materials Science Severe plastic deformation Pearlite 0210 nano-technology
Zdroj:	Materials Science and Technology. 35:437-447
ISSN:	1743-2847 0267-0836
DOI:	10.1080/02670836.2019.1569746
Popis:	The evolution of microstructure and texture was investigated in a severely warm-rolled ultrafine pearlitic steel. The steel was 95% warm-rolled at 600°C and annealed at 700°C for different time intervals. The spheroidisation of cementite initiated after 30% reduction and completed beyond 70% reduction. The 95% warm-rolled steel showed elongated as well as ultrafine equiaxed ferrite grains. Texture inhomogeneities were evidenced by the presence of Goss component ({011} ) on the surface originating due to surface shear and diffuse texture at the interior. Formation of equiaxed microstructure after annealing through continuous recrystallisation resulted in the retention of the surface Goss component. However, the Goss component was destroyed beyond annealing for 180 minutes due to the abnormal growth of other grains.
Databáze:	OpenAIRE
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