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Prediction of Influences of Co, Ni, and W Elements on Carbide Precipitation Behavior in Fe–C–V–Cr–Mo Based High Speed Steels
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
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2018 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 89, no 10, article id 1800172Article in journal (Refereed) Published
Abstract [en]

The effects of Co, Ni together with W addition on the precipitation sequence, amount, and composition of carbides and FCC matrix in Fe–C–V–Cr–Mo based alloys are investigated with the help of Partial Equilibrium (PE) approximation and thermodynamic calculations as well as differential scanning calorimetry (DSC) and electron backscatter diffraction (EBSD) - energy dispersive spectrometer (EDS) analyses. Results show that, individually, Co and Ni elements strengthen the matrix by their great solubility in FCC matrix; W element enlarges the hardness of the alloy through benefiting the formation of M6C carbide. Mutually, the addition of Co and Ni together with W increases the precipitation temperature of the eutectic carbides, although the addition of Co and Ni itself exerts little influence on the nature (type, amount, and composition) of the carbides. These predictions combined with the experimental verifications provide potentials for the alloy design and the property control in high speed steels.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 89, no 10, article id 1800172
Keywords [en]
carbide precipitation, Co, Ni, and W element addition, DSC, EBSD-EDS analysis, Fe–C–V–Cr–Mo–W–Co–Ni high speed steel, partial equilibrium approximation, Carbides, Differential scanning calorimetry, Isomers, Molybdenum alloys, Precipitation (chemical), Spectrometers, Steel metallography, Tool steel, EDS analysis, Electron back scatter diffraction, Energy dispersive spectrometers, High-speed steels, Partial equilibrium, Precipitation temperature, Thermodynamic calculations, Chromium alloys
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Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-236348DOI: 10.1002/srin.201800172ISI: 000446268500007Scopus ID: 2-s2.0-85050933709OAI: oai:DiVA.org:kth-236348DiVA, id: diva2:1261590
Note

QC 20181108

Available from: 2018-11-08 Created: 2018-11-08 Last updated: 2018-11-08Bibliographically approved

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Nakajima, KeijiHedström, PeterJönsson, Pär

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