Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings
Само за регистроване кориснике
2012
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The properties of the high-chromium white iron (HCWI) hardfaced materials, such as hardness, toughness and wear resistance, are affected by the morphology of their reinforcing phase, the Cr-carbides. In this work, the influence of the 1) welding parameters, 2) welding procedures and 3) chemical composition on the near-surface Cr-carbides morphology is presented. Additionally, the effects of the nucleo C® formula (Castolin Eutectic Ltd.) of unknown composition are evaluated. The hardfaced coatings are deposited by using the submerged metal arc welding (SMAW) process. The obtained near-surface structures are observed with scanning electron microscope with energy dispersive system (SEM-EDS). The structure morphological parameters are quantitatively determined by use of the ImageJ software. In the single-layer HCWI hardfaced coatings, larger heat input per unit length (≈ 4.1 kJ/mm) is leading to a formation of the hypoeutectic structures. An approximately two times lower heat input (≈ 1.8 ...kJ/mm) stimulates the solidification of the near-eutectic structures with presence of spheroidized eutectic and primary Cr-carbides (the Nucleo C effect). The double-layer coatings deposited with the ≈ 1.8 kJ/mm possess the hypereutectic structures with blade-like primary and needle-like eutectic carbides (the absence of the Nucleo C effect). The lower heat input (≈ 1.4 kJ/mm) and increase of the chromium and carbon content result in a formation of the hypereutectic structures with presence of the primary rod-like Cr-carbides embedded in the eutectic matrix with coarser and irregular eutectic Cr-carbides. The influence of the nucleo C® formula on the Cr-carbides morphology is more pronounced in the single-layer HCWI hardfaced coatings than in the double-layer coatings.
Кључне речи:
hardfacing / high chromium white iron / chromium carbides / morphology / SEM-EDSИзвор:
Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic, 2012, 57, Special Issue S1, 15-20Издавач:
- Timisoara : Faculty of Management in Production and Transportation
Финансирање / пројекти:
- Истраживање и оптимизација технолошких и функционалних перформанси вентилационог млина термоелектране Костолац Б (RS-MESTD-Technological Development (TD or TR)-34028)
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Gligorijević, Bojan R. AU - Vencl, Aleksandar AU - Katavić, Boris T. PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4332 AB - The properties of the high-chromium white iron (HCWI) hardfaced materials, such as hardness, toughness and wear resistance, are affected by the morphology of their reinforcing phase, the Cr-carbides. In this work, the influence of the 1) welding parameters, 2) welding procedures and 3) chemical composition on the near-surface Cr-carbides morphology is presented. Additionally, the effects of the nucleo C® formula (Castolin Eutectic Ltd.) of unknown composition are evaluated. The hardfaced coatings are deposited by using the submerged metal arc welding (SMAW) process. The obtained near-surface structures are observed with scanning electron microscope with energy dispersive system (SEM-EDS). The structure morphological parameters are quantitatively determined by use of the ImageJ software. In the single-layer HCWI hardfaced coatings, larger heat input per unit length (≈ 4.1 kJ/mm) is leading to a formation of the hypoeutectic structures. An approximately two times lower heat input (≈ 1.8 kJ/mm) stimulates the solidification of the near-eutectic structures with presence of spheroidized eutectic and primary Cr-carbides (the Nucleo C effect). The double-layer coatings deposited with the ≈ 1.8 kJ/mm possess the hypereutectic structures with blade-like primary and needle-like eutectic carbides (the absence of the Nucleo C effect). The lower heat input (≈ 1.4 kJ/mm) and increase of the chromium and carbon content result in a formation of the hypereutectic structures with presence of the primary rod-like Cr-carbides embedded in the eutectic matrix with coarser and irregular eutectic Cr-carbides. The influence of the nucleo C® formula on the Cr-carbides morphology is more pronounced in the single-layer HCWI hardfaced coatings than in the double-layer coatings. PB - Timisoara : Faculty of Management in Production and Transportation T2 - Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic T1 - Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings EP - 20 IS - Special Issue S1 IS - 71 SP - 15 VL - 57 UR - https://hdl.handle.net/21.15107/rcub_machinery_4332 ER -
@article{ author = "Gligorijević, Bojan R. and Vencl, Aleksandar and Katavić, Boris T.", year = "2012", abstract = "The properties of the high-chromium white iron (HCWI) hardfaced materials, such as hardness, toughness and wear resistance, are affected by the morphology of their reinforcing phase, the Cr-carbides. In this work, the influence of the 1) welding parameters, 2) welding procedures and 3) chemical composition on the near-surface Cr-carbides morphology is presented. Additionally, the effects of the nucleo C® formula (Castolin Eutectic Ltd.) of unknown composition are evaluated. The hardfaced coatings are deposited by using the submerged metal arc welding (SMAW) process. The obtained near-surface structures are observed with scanning electron microscope with energy dispersive system (SEM-EDS). The structure morphological parameters are quantitatively determined by use of the ImageJ software. In the single-layer HCWI hardfaced coatings, larger heat input per unit length (≈ 4.1 kJ/mm) is leading to a formation of the hypoeutectic structures. An approximately two times lower heat input (≈ 1.8 kJ/mm) stimulates the solidification of the near-eutectic structures with presence of spheroidized eutectic and primary Cr-carbides (the Nucleo C effect). The double-layer coatings deposited with the ≈ 1.8 kJ/mm possess the hypereutectic structures with blade-like primary and needle-like eutectic carbides (the absence of the Nucleo C effect). The lower heat input (≈ 1.4 kJ/mm) and increase of the chromium and carbon content result in a formation of the hypereutectic structures with presence of the primary rod-like Cr-carbides embedded in the eutectic matrix with coarser and irregular eutectic Cr-carbides. The influence of the nucleo C® formula on the Cr-carbides morphology is more pronounced in the single-layer HCWI hardfaced coatings than in the double-layer coatings.", publisher = "Timisoara : Faculty of Management in Production and Transportation", journal = "Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic", title = "Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings", pages = "20-15", number = "Special Issue S1, 71", volume = "57", url = "https://hdl.handle.net/21.15107/rcub_machinery_4332" }
Gligorijević, B. R., Vencl, A.,& Katavić, B. T.. (2012). Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings. in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic Timisoara : Faculty of Management in Production and Transportation., 57(Special Issue S1), 15-20. https://hdl.handle.net/21.15107/rcub_machinery_4332
Gligorijević BR, Vencl A, Katavić BT. Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings. in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic. 2012;57(Special Issue S1):15-20. https://hdl.handle.net/21.15107/rcub_machinery_4332 .
Gligorijević, Bojan R., Vencl, Aleksandar, Katavić, Boris T., "Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings" in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic, 57, no. Special Issue S1 (2012):15-20, https://hdl.handle.net/21.15107/rcub_machinery_4332 .