Martensitic phase transformation and pop-in in compression of austenitic steel nanoplates observed in situ by transmission electron microscopy
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- Martensitic phase transformation and pop-in in compression of austenitic steel nanoplates observed in situ by transmission electron microscopy
- Kim, Yong-Jae; Yoo, Byung-Gil; Choi, In-Chul; Seok, Moo-Young; Kim, Ju-Young; Ohmura, Takahito; Jang, Jae-il
- Diffraction modes; Imaging modes; In-situ; In-situ compression; In-situ TEM; Martensitic phase transformations; Microstructural changes; Nano scale; Nano-Plate; Nanoplates; Pop-in; Shearing-off; Slip band; Transmission electron microscope
- Issue Date
- ELSEVIER SCIENCE BV
- MATERIALS LETTERS, v.75, no., pp.107 - 110
- To explore small-scale martensitic phase transformation and its relation to pop-ins observed in stress-strain curve, in situ compression experiments in transmission electron microscope were performed on austenitic steel nanoplates. Diffraction mode test revealed that the transformation indeed occurs at the nanoscale, but the pop-in seems not related with sudden microstructural change. Additional imaging mode test suggests that pop-ins may be caused by rapid formation of slip band and/or shearing-off of the nanoplate.
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