| Issue |
E3S Web of Conf.
Volume 469, 2023
The International Conference on Energy and Green Computing (ICEGC’2023)
|
|
|---|---|---|
| Article Number | 00094 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/e3sconf/202346900094 | |
| Published online | 20 December 2023 | |
Microstructure, macro-, and nano-hardness assessment of AISI 302 steel aged at 1000°C
1 Laboratory of Physical-Chemistry of Processes and Materials, Faculty of Sciences and Technology Settat, Hassan 1 st University, Settat, Morocco
2 Laboratory of Organic, Bioorganic and Chemistry Environment, Faculty of Sciences, University Chouaib Doukkali, El Jadida, Morocco
* Corresponding author: o.benlenda@uhp.ac.ma
Changes in the microstructure of the AISI 302 steel must be analyzed in order to optimize its mechanical performance. In this paper, we studied the thermal aging behavior of the AISI 302 steel. The aging treatments of the steel were carried out at a fixed temperature of 1000°C and for durations between 0 and 6000 minutes. A metallographic microscope was used to see changes in the AISI 302 steel microstructure. In addition, the steel was mechanically characterized using the nano-indentation technique and macro-hardness tests. At the temperature investigated, the aging time increase caused a microstructure composed of large austenitic grains and a small area of grain boundaries per unit volume. For the mechanical characterization, the nano-indentation responses also showed a decrease in the nano-hardness and plasticity of the austenite as the aging time increased. The steel macro-hardness decreased significantly by incrementing the aging time.
© The Authors, published by EDP Sciences, 2023
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