Abstract
The change in the microstructure of ductile cast iron subjected to hot plastic deformation has been investigated after the fracture of the samples induced by compression (upset forging) at room temperature. It has been shown that compression-induced tangential stresses cause shear deformation, which results in the shear fracture of test samples at an angle of 40°–50° to the longitudinal axis of a sample. It has been established that the fracture is accompanied by the formation of a narrow zone of severe plastic deformation of ductile cast iron, which is located on both sides of the major fracture. In this zone, the initial microstructure undergoes significant changes due to the plastic flow of the matrix and graphite inclusions.
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Original Russian Text © A.S. Chaus, 2014, published in Fizika Metallov i Metallovedenie, 2014, Vol. 115, No. 7, pp. 716–726.
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Chaus, A.S. Effect of room-temperature compression on microstructure of ductile cast iron subjected to hot plastic deformation. Phys. Metals Metallogr. 115, 672–681 (2014). https://doi.org/10.1134/S0031918X14040048
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DOI: https://doi.org/10.1134/S0031918X14040048