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- W2912109591 abstract "The present work was undertaken to determine the effect of nickel on the microstructure in rapidly solidified ∼ Fe-25Cr-xNi-5Mo-0.8C alloys. The alloys were synthesised via arc melting and rapidly solidified using the suction casting technique. Phase composition was investigated using synchrotron x-ray diffraction and the solidification range was determined by means of differential scanning calorimetry. The microstructure in as-cast state was analysed using scanning electron microscopy. Properties were investigated by hardness measurements and scratch tests using the nanoindentation technique. The obtained results were discussed with respect to thermodynamic calculations, carried out using the CALPHAD approach. It was observed that with increasing nickel contents the average dendrite size, mean free path of the matrix and the spacing between the lamellar carbides, as well as the regularity and thickness of the carbides decreased. With decreasing mean free path of the matrix a decrease of average scratch depth occurred. This corresponds to abrasive wear, i.e. in alloys having smaller average dendrite size, abrasive particles will more frequently encounter eutectic areas with greater hardness than the matrix. As a result, the material exhibits greater abrasive wear resistance. The results presented in this work show that there is a possibility to enhance abrasive wear resistance of hypoeutectic iron-based alloys by modifying their chemical composition and, in turn, reducing the mean free path of the matrix." @default.
- W2912109591 created "2019-02-21" @default.
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- W2912109591 date "2019-05-01" @default.
- W2912109591 modified "2023-10-16" @default.
- W2912109591 title "Microstructural response on nickel addition in rapidly solidified ∼Fe-25Cr-xNi-5Mo-0.8C [x = 0, 6, 11, 15, 21 wt. %] hardfacing alloys" @default.
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- W2912109591 doi "https://doi.org/10.1016/j.jallcom.2019.02.110" @default.
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