Feature of Recovery Kinetics in Cold-Drawn As-Hot-Rolled Si-Mn Dual-Phase Steels

Li Shengli; Tian Cong

doi:10.13374/j.issn1001-053x.1992.04.027

Volume 14 Issue 4

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Li Shengli, Tian Cong. Feature of Recovery Kinetics in Cold-Drawn As-Hot-Rolled Si-Mn Dual-Phase Steels[J]. Chinese Journal of Engineering, 1992, 14(4): 458-462. doi: 10.13374/j.issn1001-053x.1992.04.027

Citation:

Li Shengli, Tian Cong. Feature of Recovery Kinetics in Cold-Drawn As-Hot-Rolled Si-Mn Dual-Phase Steels[J]. Chinese Journal of Engineering, 1992, 14(4): 458-462. doi: 10.13374/j.issn1001-053x.1992.04.027

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Feature of Recovery Kinetics in Cold-Drawn As-Hot-Rolled Si-Mn Dual-Phase Steels

doi: 10.13374/j.issn1001-053x.1992.04.027

Department of Materials Science and Engineering

Received Date: 1991-10-13
Available Online: 2021-10-16

Abstract

Abstract

By using TEM and tensile test, the feature of recovery kinetics in cold- drawn as-hot-rolled Si-Mn dual-phase steel was investigated. The results show that when the steel was heated for 30 min at≤500℃, only recovery process was occurred. Heated at 500℃, the activation energies of recovery process of the steels are 187.9kJ/mol(steel J) and 220.6kJ/mol(steel H) respectively. These values are close to the self-diffusional activation energy of iron in α-Fe(239.7kJ/mol). It is considered that the recovery process at this temperature is controlled by the self-diffusion of iron in α-Fe.
- as-hot-rolled dual-phase steel,
- cold-drawn wire,
- recovery