| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
In-situ Neutron Diffraction Study on the Tensile Deformation of an Ultrafine-grained Fe-Ni-Al-C steel Including B2 Phase |
| Author(s) |
Si Gao, Wenqi Mao, Wu Gong, Stefanus Harjo, Akinobu Shibata, Nobuhiro Tsuji |
| On-Site Speaker (Planned) |
Si Gao |
| Abstract Scope |
In the present study, an Fe-24Ni-6Al-0.4C (wt%) specimen consists of ultrafine grained austenite and B2 phase was fabricated by simple cold rolling and subsequent annealing process, which showed excellent combination of tensile strength and elongation. In order to evaluate the contribution of each constituent phases, namely austenite, B2 and deformation induced martensite phase that was forming during tensile deformation, to the overall tensile flow stress of the material, tensile test with in-situ neutron diffraction measurement was conducted and the phase stress (elastic stress) of each constituent phase during tensile test was measured from the peak shifting in the neutron diffraction profiles. Significant phase stress was measured in B2 and martensite phase during tensile deformation, suggesting that both B2 phase and deformation induced martensite have major contributions to the high strength and high strain hardening of the material. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |