Microstructure and toughness of CuNiMo austempered ductile iron
Apstrakt
The effect of austempering on the microstructure and toughness of nodular cast iron (designated as CuNiMoSG) alloyed with molybdenum, copper, nickel, and manganese has been studied. Light microscopy (LM), scanning electron microscopy (SEM), and X-ray diffraction technique were performed for microstructural characterization, whereas impact energy test was applied for toughness measurement. Specimens were austenitised at 860 degreesC, then austempered for various times at 320 and 400 degreesC, followed by ice-water quenching. Austempering at 320 degreesC produces a microstructure consisting of a mixture of acicular bainitic ferrite and the stable carbon-enriched austenite. In this microstructure epsilon-carbides are also identified after austempering up to 5 h. Fracture mode is changed from ductile to brittle with the prolonged time of austempering at 320 degreesC. The highest impact energy (115 kJ) corresponds not only to ductile fracture, but also to the maximum value of the volume fra...ction of retained austenite. Only martensitic structure was observed during austempering at 400 degreesC, inducing brittle fracture and significantly low-impact energy (10-12 kJ). (C) 2004 Elsevier B.V. All rights reserved.
Ključne reči:
carbides / acicular ferrite / austenite / fracture / impact energyIzvor:
Materials Letters, 2004, 58, 22-23, 2707-2711
DOI: 10.1016/j.matlet.2004.02.041
ISSN: 0167-577X
WoS: 000223164200001
Scopus: 2-s2.0-3242683386
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Eric, O AU - Sidjanin, L AU - Miskovic, Z AU - Zec, Slavica AU - Jovanović, Milan T. PY - 2004 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2797 AB - The effect of austempering on the microstructure and toughness of nodular cast iron (designated as CuNiMoSG) alloyed with molybdenum, copper, nickel, and manganese has been studied. Light microscopy (LM), scanning electron microscopy (SEM), and X-ray diffraction technique were performed for microstructural characterization, whereas impact energy test was applied for toughness measurement. Specimens were austenitised at 860 degreesC, then austempered for various times at 320 and 400 degreesC, followed by ice-water quenching. Austempering at 320 degreesC produces a microstructure consisting of a mixture of acicular bainitic ferrite and the stable carbon-enriched austenite. In this microstructure epsilon-carbides are also identified after austempering up to 5 h. Fracture mode is changed from ductile to brittle with the prolonged time of austempering at 320 degreesC. The highest impact energy (115 kJ) corresponds not only to ductile fracture, but also to the maximum value of the volume fraction of retained austenite. Only martensitic structure was observed during austempering at 400 degreesC, inducing brittle fracture and significantly low-impact energy (10-12 kJ). (C) 2004 Elsevier B.V. All rights reserved. T2 - Materials Letters T1 - Microstructure and toughness of CuNiMo austempered ductile iron VL - 58 IS - 22-23 SP - 2707 EP - 2711 DO - 10.1016/j.matlet.2004.02.041 ER -
@article{ author = "Eric, O and Sidjanin, L and Miskovic, Z and Zec, Slavica and Jovanović, Milan T.", year = "2004", abstract = "The effect of austempering on the microstructure and toughness of nodular cast iron (designated as CuNiMoSG) alloyed with molybdenum, copper, nickel, and manganese has been studied. Light microscopy (LM), scanning electron microscopy (SEM), and X-ray diffraction technique were performed for microstructural characterization, whereas impact energy test was applied for toughness measurement. Specimens were austenitised at 860 degreesC, then austempered for various times at 320 and 400 degreesC, followed by ice-water quenching. Austempering at 320 degreesC produces a microstructure consisting of a mixture of acicular bainitic ferrite and the stable carbon-enriched austenite. In this microstructure epsilon-carbides are also identified after austempering up to 5 h. Fracture mode is changed from ductile to brittle with the prolonged time of austempering at 320 degreesC. The highest impact energy (115 kJ) corresponds not only to ductile fracture, but also to the maximum value of the volume fraction of retained austenite. Only martensitic structure was observed during austempering at 400 degreesC, inducing brittle fracture and significantly low-impact energy (10-12 kJ). (C) 2004 Elsevier B.V. All rights reserved.", journal = "Materials Letters", title = "Microstructure and toughness of CuNiMo austempered ductile iron", volume = "58", number = "22-23", pages = "2707-2711", doi = "10.1016/j.matlet.2004.02.041" }
Eric, O., Sidjanin, L., Miskovic, Z., Zec, S.,& Jovanović, M. T.. (2004). Microstructure and toughness of CuNiMo austempered ductile iron. in Materials Letters, 58(22-23), 2707-2711. https://doi.org/10.1016/j.matlet.2004.02.041
Eric O, Sidjanin L, Miskovic Z, Zec S, Jovanović MT. Microstructure and toughness of CuNiMo austempered ductile iron. in Materials Letters. 2004;58(22-23):2707-2711. doi:10.1016/j.matlet.2004.02.041 .
Eric, O, Sidjanin, L, Miskovic, Z, Zec, Slavica, Jovanović, Milan T., "Microstructure and toughness of CuNiMo austempered ductile iron" in Materials Letters, 58, no. 22-23 (2004):2707-2711, https://doi.org/10.1016/j.matlet.2004.02.041 . .