2019
DOI: 10.2355/isijinternational.isijint-2018-695
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Dependence of Carbon Concentration and Alloying Elements on the Stability of Iron Carbides

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Cited by 21 publications
(5 citation statements)
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“…In the simulation, cementite is treated as a line compound with constant 25 at.% C and this is informed from our atom probe tomography analysis of C content in cementite (not shown here) as well as the observations of cementite at near stoichiometry in similar martensite tempering studies (e.g. [9,13,20,60]). We have also considered the effect of C segregation to defects on the C mass balance for cementite fraction and the tie-line evolution.…”
Section: Modelling Assumptions For Multicomponent Alloysmentioning
confidence: 99%
“…In the simulation, cementite is treated as a line compound with constant 25 at.% C and this is informed from our atom probe tomography analysis of C content in cementite (not shown here) as well as the observations of cementite at near stoichiometry in similar martensite tempering studies (e.g. [9,13,20,60]). We have also considered the effect of C segregation to defects on the C mass balance for cementite fraction and the tie-line evolution.…”
Section: Modelling Assumptions For Multicomponent Alloysmentioning
confidence: 99%
“…Meanwhile, the carbon concentration of ε carbide, a metastable carbide, differs with the measurement method but has been reported to be 18.9-22.6 at% via APT measurements. 38) Therefore, although the high carbon concentration region confirmed in this study cannot be identified because electron diffraction was not conducted, the region certainly has a lesser carbon content than cementite. Therefore, the high carbon concentration region is speculated to be ε carbides which precipitated via self-tempering or low- temperature tempering after quenching.…”
Section: Tempered Martensitementioning
confidence: 69%
“…5b,c). Even if one considers the underestimation of carbon fraction due to the local magnification effect of AP analysis, 23,24) the observed carbon fraction is considerably lower than those in cementite (~25 at%) and transition or -carbides (20-33 at%) 9,21,25) . It is, therefore, natural to consider that the growth of carbon clusters on dislocation occurs during RT aging in the martensite block of Specimen I.…”
Section: Specimen Imentioning
confidence: 91%