Characteristics of Deformation Enhanced Transformation in Low Carbon Steel

Acta Metall Sin

2004, Vol. 40

Issue (2): 135-140 DOI:

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Characteristics of Deformation Enhanced Transformation in Low Carbon Steel

YANG Wangyue

The State Key Laboratory for Advanced Metals and Materials; University of Science & Technolo9gy Beijing; Beijing 100083

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YANG Wangyue. Characteristics of Deformation Enhanced Transformation in Low Carbon Steel. Acta Metall Sin, 2004, 40(2): 135-140 .

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Abstract The concept of deformation enhanced transformation of ferrite in plain low carbon steel and its characteristics are presented. The systematic work indicates that deformation significantly enhances the ferrite transformation of undercooled austenite in plain low carbon steel. Nucleation is the dominant process of the transformation. Until the completion of the transformation, nucleation is always repeated, especially at the zone in front of the newly formed ferrite grains, which restricts the grain growth and leads to formation of very fine ferrite grains. Three stages of kinetics are clearly shown from the experimental measurement, which correspond to nucleation at grain boundaries, at the zone in front of newly formed ferrite grains and at residual austenite.

Key words: Low carbon steel deformation enhanced transformation kinetics

Received: 24 February 2003

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