Analysis of forging process of the NiCrN superalloy for motor boat driving shaft

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Superalloys containing nickel and chromium display high deformation resistance and low plasticity during high-rate plastic forming processes, thus limiting the potentials to improve their mechanical parameters. At the aim to overcome this problem an NiCrN superalloy has been found. In this paper the analysis of forging of this NiCrN superalloy has been presented. Mathematical FEM model of the process are verified by experimental tests run on a double-acting power hammer. Tests reveal, that plastic working of the NiCrN alloy combined with thermal treatment improves its strength by nearly 25%, at the same time its plastic deformability remains the same. Research work has revealed very high resistance to corrosion of the alloy when subjected to stress and marine environment.

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Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

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