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Microstructural evolution during simulated OLAC processing of a low-carbon microalloyed steel

Journal Article


Abstract


  • The microstructural evolution during simulated on-line accelerated cooling (OLAC) of a commercial Grade 80 pipe steel was studied using a quench deformation dilatometer. The transformed matrix microstructure contains various amounts of polygonal ferrite, granular bainite and acicular ferrite, depending mainly on the accelerated-cooling interrupt temperature. The final microstructure is predicted well by drawing the OLAC schedule on the appropriate CCT diagram. Three distinct groups of precipitates are found in the final microstructure, which form during reheat, austenite deformation, and cooling, respectively. The distribution and composition of the precipitates varies widely with steel composition and processing schedule. The microstructure of industrially processed plate agrees well with that of corresponding laboratory simulations.

Publication Date


  • 1996

Citation


  • Pereloma, E. V., Bayley, C., & Boyd, J. D. (1996). Microstructural evolution during simulated OLAC processing of a low-carbon microalloyed steel. Materials Science and Engineering A, 210(1-2), 16-24. doi:10.1016/0921-5093(95)10065-2

Scopus Eid


  • 2-s2.0-0030170336

Web Of Science Accession Number


Start Page


  • 16

End Page


  • 24

Volume


  • 210

Issue


  • 1-2

Place Of Publication


Abstract


  • The microstructural evolution during simulated on-line accelerated cooling (OLAC) of a commercial Grade 80 pipe steel was studied using a quench deformation dilatometer. The transformed matrix microstructure contains various amounts of polygonal ferrite, granular bainite and acicular ferrite, depending mainly on the accelerated-cooling interrupt temperature. The final microstructure is predicted well by drawing the OLAC schedule on the appropriate CCT diagram. Three distinct groups of precipitates are found in the final microstructure, which form during reheat, austenite deformation, and cooling, respectively. The distribution and composition of the precipitates varies widely with steel composition and processing schedule. The microstructure of industrially processed plate agrees well with that of corresponding laboratory simulations.

Publication Date


  • 1996

Citation


  • Pereloma, E. V., Bayley, C., & Boyd, J. D. (1996). Microstructural evolution during simulated OLAC processing of a low-carbon microalloyed steel. Materials Science and Engineering A, 210(1-2), 16-24. doi:10.1016/0921-5093(95)10065-2

Scopus Eid


  • 2-s2.0-0030170336

Web Of Science Accession Number


Start Page


  • 16

End Page


  • 24

Volume


  • 210

Issue


  • 1-2

Place Of Publication