Please use this identifier to cite or link to this item:
https://hdl.handle.net/11147/13695
Title: | Influence of partitioning treatment on microstructure and mechanical properties of an alloyed ductile iron austempered at different temperatures | Authors: | Nalçacı, Burak Davut, Kemal Neite, Maximilian Münstermann, Sebastian Erdoğan, Mehmet |
Keywords: | Austempered ductile iron (ADI) Austempering temperature EBSD analysis Mechanical properties Partitioning treatment |
Publisher: | Walter de Gruyter GmbH | Abstract: | The present study was conducted to uncover effects of partitioning treatment on Cu-Ni-Mo alloyed ductile iron (DI) austempered at different temperatures. For this purpose, the DI samples, produced via sand casting, were austenitized at 900 °C for 60 min, followed by austempering at the temperatures of 275-325-375 °C for 120 min and afterwards a partitioning treatment was applied at 200 °C for 15 min. In the characterization studies, dilatometer, image analysis, JMat-Pro, mechanical tests, XRD, optical microscope, and scanning electron microscope (SEM) equipped with EBSD detector were utilized. Characterization studies showed that the effects of partitioning treatment were directly correlated with austempering temperature and high carbon austenite volume fraction changed in the range of 19.48-35.45%. That redistribution of carbon (C) between bainitic ferrite and high carbon austenite occurred, in turn, the carbon content of high carbon austenite increased with the partitioning treatment irrespective of austempering temperature were uncovered. Furthermore, the partitioning treatment considerably changed the grain morphologies of both high carbon austenite and banitic ferrite. As a consequence of these microstructural differences, the highest tensile strength of 1489.2 MPa was established in the sample austempered at 275 °C and partitioned at 200 °C, whereas the highest ductility of 5.61% acquired at the austempering temperature of 375 °C. © 2023 Walter de Gruyter GmbH, Berlin/Boston. | URI: | https://doi.org/10.1515/mt-2022-0421 https://hdl.handle.net/11147/13695 |
ISSN: | 0025-5300 |
Appears in Collections: | Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
Show full item record
CORE Recommender
SCOPUSTM
Citations
1
checked on Sep 1, 2024
WEB OF SCIENCETM
Citations
1
checked on Aug 24, 2024
Page view(s)
538
checked on Sep 2, 2024
Google ScholarTM
Check
Altmetric
Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.