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The effect of hot-mounting on the microstructure of an as-quenched auto-tempered low-carbon martensitic steel |
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| Author: | Babu, Shashank Ramesh1; Jaskari, Matias2; Järvenpää, Antti2; |
| Organizations: |
1Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, 90014 Oulun yliopisto, Finland 2Kerttu Saalasti Institute, University of Oulu, Pajatie 5, FI-85500 Nivala, Finland |
| Format: | article |
| Version: | published version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 2.3 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2019052817606 |
| Language: | English |
| Published: |
Multidisciplinary Digital Publishing Institute,
2019
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| Publish Date: | 2019-05-28 |
| Description: |
AbstractThe effect of hot-mounting for metallographic studies of as-quenched low-carbon martensitic steels has been studied. Hot-mounting is typically carried out at 150–200 °C, i.e., a low-temperature tempering regime. Cold- and hot-mounted specimens from an as-quenched low-carbon auto-tempered steel were examined using a scanning electron microscope and their hardness levels were also compared. It was found that hot-mounting causes additional tempering that manifests as the appearance of new precipitates in those regions that are free of auto-tempered cementite. The observations were rationalized using DICTRA simulations to calculate the potential growth of cementite. Hot-mounting was also shown to cause a small but statistically significant increase in the hardness of the martensite. see all
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| Series: |
Metals |
| ISSN: | 2075-4701 |
| ISSN-E: | 2075-4701 |
| ISSN-L: | 2075-4701 |
| Volume: | 9 |
| Issue: | 5 |
| Article number: | 550 |
| DOI: | 10.3390/met9050550 |
| OADOI: | https://oadoi.org/10.3390/met9050550 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
216 Materials engineering |
| Subjects: | |
| Funding: |
The authors are grateful for financial support from the European Commission under grant number 675715-MIMESIS-H2020-MSCA-ITN-2015, which is a part of the Marie Sklodowska-Curie Innovative Training Networks European Industrial Doctorate Programme. |
| EU Grant Number: |
(675715) MIMESIS - Mathematics and Materials Science for Steel Production and Manufacturing |
| Copyright information: |
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
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https://creativecommons.org/licenses/by/4.0/ |