Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 360, Issue 1-2, Pages 249-257Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5093(03)00477-5
Keywords
plastic deformation; acicular ferrite; mechanical stabilisation; allotriomorphic ferrite; oxides; steels
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The effect of plastic deformation on the transformation of austenite to acicular ferrite in a Fe-Mn-Si-C alloy steel containing non-metallic inclusions was investigated. The transformation to acicular ferrite is retarded and the final fraction of acicular ferrite is reduced in plastically deformed austenite, which is a characteristic of a displacive transformation mechanism. The increase in the chemical driving force for transformation due to large undercooling below the B-s temperature overcomes the efficacy of dislocations in preventing the growth of acicular ferrite. (C) 2003 Elsevier B.V. All rights reserved.
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