On the three-dimensional atomic scale characterisation towards understanding the sequence of nano-scale B2 phase evolution in Ni-alloyed Fe-Mn-Al-C low-density steel

作者

Mainak Saha¹ , M. Sadhasivam¹ , M.B. Ponnuchamy¹ , K. Gururaj¹ , C. Mahata¹ , N. Chandrasekaran¹ , G. Vijayaragavan² , D. Prabhu² , K. Suresh³ , K. Kumbhar⁴ , K.G. Pradeep¹

1. Indian Institute of Technology Madras
2. ARCI Chennai
3. ARCI Hyderabad
4. DMRL Hyderabad

会议/活动

Annual Meeting of the Electron Microscopy Society of India (EMSI), February 2023 (New Delhi, India)

海报摘要

One among the major factors that influence the mechanical properties of multi-component steels are the different phases present in it and their volume fraction, morphology, distribution and thermal stability. Here we report on the thermal stability and the associated phase evolution sequence especially that of nanoscale precipitates in a hot-rolled Ni-alloyed Fe-16Mn-9Al-0.9C (wt.%) low-density steel. Bulk phase analysis using X-ray diffraction shows the presence of three phases, namely FCC structured γ,L12 ’structured κ and BCC phases in as-rolled condition which are in agreement with thermodynamic phase predictions. Combined microscopic analysis involving three-dimensional atom probe tomography revealed the presence of nano-scale κ and Ni-Al type B2 precipitates, highly localized within majority γ and banded BCC phase regions respectively. This poster, therefore will focus on the temporal evolution of B2 nanoprecipitates and their localisation within the banded BCC phase regions along with their stability as a function of thermal treatment.

关键词

Phase evolution, Precipitate coarsening, Correlative Microscopy, Atom Probe Tomography

研究领域

Material Sciences

参考文献

1. Saha Mainak, Ponnuchamy M. B., Sadhasivam M., Mahata Chinmoy, Vijayaragavan G., Gururaj Karanam, Suresh K., Chandrasekaran N., Prabhu D., Kumbhar Krushna, Pradeep K. G.. Revealing the Localization of NiAl-Type Nano-Scale B2 Precipitates Within the BCC Phase of Ni Alloyed Low-Density FeMnAlC Steel. JOM. Vol. 74(8):3181–3190. 2022. Springer Science and Business Media LLC.

基金

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补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2024 Saha et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.