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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Ultrafine-grained and Heterostructured Materials (UFGH XII)
Presentation Title In-situ X-ray Diffraction Study on Tensile Deformation of TRIP-assisted Metastable Austenitic Fe-Ni-C Steel
Author(s) Sungsoon Kang, Si Gao, Wenqi Mao, Yu Bai, Myeongheom Park, Hiroki Adachi, Masugu Sato, Nobuhiro Tsuji
On-Site Speaker (Planned) Sungsoon Kang
Abstract Scope Tensile test with in-situ high energy synchrotron X-ray diffraction at the beam line BL46XU of SPring-8 was carried out on a TRIP-assisted metastable austenitic Fe-Ni-C specimen having an excellent combination of a high ultimate tensile strength and a good tensile elongation . The change in the volume fraction of deformation induced martensite during tensile deformation of the sample was precisely measured using the diffraction profiles. Besides that, analysis of phase stresses in austenite and martensite was performed measured by the diffraction peak shift due to the elastic deformation of the phases in response to the external load. The results showed a moderate transformation rate of the strain induced martensite, and a dramatic phase stress partitioning between the deformation induced martensite and the austenite during plastic deformation.
Proceedings Inclusion? Planned:


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Ultra-strong Low Carbon Nano-steel Produced by Heterostructure and Interstitial Mediated Warm Rolling
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