2020
DOI: 10.3390/ma13225266
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Phase Transition Kinetics in Austempered Ductile Iron (ADI) with Regard to Mo Content

Abstract: The phase transformation to ausferrite during austempered ductile iron (ADI) heat treatment can be significantly influenced by the alloying element Mo. Utilizing neutron diffraction, the phase transformation from austenite to ausferrite was monitored in-situ during the heat treatment. In addition to the phase volume fractions, the carbon enrichment of retained austenite was investigated. The results from neutron diffraction were compared to the macroscopic length change from dilatometer measurements. They show… Show more

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Cited by 8 publications
(9 citation statements)
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“…Between stages I and II, there is a processing window period, which lasts from 0 min to 3 h, depending on the austempering temperature and alloying elements content (i.e., Cu, Ni, and Mo). [32][33][34][35] The change of the phase fractions of austenite and ferrite as well as the carbon redistribution, as encoded in the crystal lattice expansion of austenite, can be extracted from the diffraction profiles and length change curves (Figure 4 and 5). [20,21] At the beginning/end of stage I (Figure 4a,c), the reflections are symmetric and can be fitted using a single Gaussian peak shape function.…”
Section: Phase Transformation In Austempered Ductile Ironmentioning
confidence: 99%
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“…Between stages I and II, there is a processing window period, which lasts from 0 min to 3 h, depending on the austempering temperature and alloying elements content (i.e., Cu, Ni, and Mo). [32][33][34][35] The change of the phase fractions of austenite and ferrite as well as the carbon redistribution, as encoded in the crystal lattice expansion of austenite, can be extracted from the diffraction profiles and length change curves (Figure 4 and 5). [20,21] At the beginning/end of stage I (Figure 4a,c), the reflections are symmetric and can be fitted using a single Gaussian peak shape function.…”
Section: Phase Transformation In Austempered Ductile Ironmentioning
confidence: 99%
“…Its result Reproduced with permission of the CC-BY license. [33] Copyright 2020, The Authors, published by Licensee MDPI, Basel, Switzerland.…”
Section: Phase Transformation In Heasmentioning
confidence: 99%
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