Combined treatment of maraging steel
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Conclusions
- 1.
Plastic deformation of maraging steel after quenching and low-temperature aging (375°C for 1 h) leads to an increase of the strength and reduction of the plasticity with increasing degrees of plastic deformation.
- 2.
Increasing the degree of plastic deformation of 60% after aging at 475°C (30 min and 3 h) induces an additional increase in strength. However, increasing the degree of plastic deformation to 90% decreases the strength and reduces the plasticity slightly.
- 3.
The highest strength resulted from the following combined treatment: quenching, aging, plastic deformation, aging. In this case it is possible to increase the tensile strength to 270 kg/mm2.
- 4.
The use of preliminary low-temperature thermomechanical treatment with subsequent aging makes it possible to increase the strength to 220–240 kg/mm2.
Keywords
Tensile Strength Plastic Deformation Combine Treatment Additional Increase Thermomechanical TreatmentPreview
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Literature cited
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