http://repository.iitr.ac.in/handle/123456789/24061| Title: | What causes the colossal C supersaturation of δ-ferrite in stainless steel during low-temperature carburization? |
| Authors: | Sasidhar K.N. Meka, Sai Ramudu |
| Published in: | Scripta Materialia |
| Abstract: | This study shows for the first time, with the help of thermodynamic calculations, that the colossal carbon supersaturation in delta-ferrite during low temperature carburization of stainless steels is not opposed to the concept of metastable carbon paraequilibration of delta-ferrite with the carburizing atmosphere. Rather, it is a consequence of triggering spinodal decomposition during the process of establishment of carbon paraequilibrium. This kind of paraequilibrium between spinodally decomposed ferrite and carburization atmosphere has not been recognized before. This renewed understanding explains the origin of colossal C supersaturation and also the strong variation in C solubility within a ferrite grain. © 2018 Elsevier Ltd |
| Citation: | Scripta Materialia, 162: 118-120 |
| URI: | https://doi.org/10.1016/j.scriptamat.2018.11.005 http://repository.iitr.ac.in/handle/123456789/24061 |
| Issue Date: | 2019 |
| Publisher: | Acta Materialia Inc |
| Keywords: | Bainite Colossal carbon supersaturation Paraequilibrium Spinodal decomposition |
| ISSN: | 13596462 |
| Author Scopus IDs: | 57194204113 24503463800 |
| Author Affiliations: | Sasidhar, K.N., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India Meka, S.R., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India |
| Funding Details: | We are grateful to Max Planck Society, Germany for financial support to the Max-Planck Partner Group of the Department of Microstructure Physics and Alloy Design, Max Planck Institute for Iron Research, Dusseldorf, Germany at Indian Institute of Technology Roorkee, Roorkee, India. Authors are also grateful to the ministry of human resource development, Government of India, for financial support under PMRF. Indian Institute of Technology Roorkee, IITR; Max-Planck-Gesellschaft, MPG; Ministry of Human Resource Development, MHRD |
| Corresponding Author: | Meka, S.R.; Department of Metallurgical and Materials Engineering, India; email: mekafmt@iitr.ac.in |
| Appears in Collections: | Journal Publications [MT] |
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