Two peaks were observed on the curves of plasticity vs testing temperature during heating and cooling.
The maximum plasticity at 240o (cooling) is due to the initial stages of the martensitic γ→α transformation, and at 650o to the shift of the fracture mechanism (from intergranular to transcrystalline).
The maximum plasticity at 600o (heating) is due to the initial stages of the reverse α→γ martensitic transformation, and at 740o to the development of recrystallization processes.
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Bogachev, I.N., Maslakova, T.M. Deformation characteristics of maraging steel at different temperatures. Met Sci Heat Treat 17, 575–577 (1975). https://doi.org/10.1007/BF00680404
- Fracture Mechanism
- Testing Temperature
- Martensitic Transformation
- Deformation Characteristic