Graf, Marius ; Kuntz, Matthias ; Autenrieth, Hermann ; Müller, Ralf (2020)
Investigation of Size Effects Due to Different Cooling Rates of As-Quenched Martensite Microstructures in a Low-Alloy Steel.
In: Applied Sciences, 10 (15)
doi: 10.3390/app10155395
Article, Bibliographie
Abstract
Martensite transformation is a complex mechanism in materials that is classically initiated by a suitable heat treatment. This heat treatment process can be optimized based on a better understanding of the physical mechanisms on the length scale of several prior austenite grains. It is therefore appropriate to consider individual process steps of heat treatment in isolation. The aim of this study is to characterize the microstructural size changes caused by a variation of the cooling rate applied during the quenching process. For this purpose, individual martensitic microstructures from different heat treatments are analyzed using the electron backscatter diffraction (EBSD) method. With special orientation relationships between the parent austenite and martensite, the structure of the prior austenite grains and the close packet plane packets can then be reconstructed. The influence of the heat treatments on these characteristics as well as on the martensite blocks is thus quantified. No significant influence of the quenching rate on the sizes of martensite blocks and packets could be found.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Graf, Marius ; Kuntz, Matthias ; Autenrieth, Hermann ; Müller, Ralf |
| Type of entry: | Bibliographie |
| Title: | Investigation of Size Effects Due to Different Cooling Rates of As-Quenched Martensite Microstructures in a Low-Alloy Steel |
| Language: | English |
| Date: | August 2020 |
| Journal or Publication Title: | Applied Sciences |
| Volume of the journal: | 10 |
| Issue Number: | 15 |
| DOI: | 10.3390/app10155395 |
| URL / URN: | https://www.mdpi.com/2076-3417/10/15/5395 |
| Abstract: | Martensite transformation is a complex mechanism in materials that is classically initiated by a suitable heat treatment. This heat treatment process can be optimized based on a better understanding of the physical mechanisms on the length scale of several prior austenite grains. It is therefore appropriate to consider individual process steps of heat treatment in isolation. The aim of this study is to characterize the microstructural size changes caused by a variation of the cooling rate applied during the quenching process. For this purpose, individual martensitic microstructures from different heat treatments are analyzed using the electron backscatter diffraction (EBSD) method. With special orientation relationships between the parent austenite and martensite, the structure of the prior austenite grains and the close packet plane packets can then be reconstructed. The influence of the heat treatments on these characteristics as well as on the martensite blocks is thus quantified. No significant influence of the quenching rate on the sizes of martensite blocks and packets could be found. |
| Identification Number: | 5395 |
| Divisions: | 13 Department of Civil and Environmental Engineering Sciences 13 Department of Civil and Environmental Engineering Sciences > Mechanics 13 Department of Civil and Environmental Engineering Sciences > Mechanics > Continuum Mechanics |
| Date Deposited: | 03 May 2022 07:13 |
| Last Modified: | 03 May 2022 07:13 |
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