Deformation Behavior of Fe-Mn-Cr-N Austenitic Steel |
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| Affiliation: | 1. Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA;2. Department of Engineering Physics, University of Wisconsin-Madison, Madison, WI 53706, USA;3. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China;4. Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;5. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan;6. Material Surface & Interface Science Research Department, Steel Research Laboratory, JFE Steel Corporation, 1-1 Minamiwatarida-cho, Kawasaki-ku, Kawasaki, Kanagawa 210-0855, Japan;7. Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;1. School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, NSW 2522, Australia;2. Electron Microscopy Centre, University of Wollongong, NSW 2500, Australia;3. Plate Mill: Manufacturing, BlueScope Steel Ltd., Port Kembla, NSW 2505, Australia;4. Research & Development: Sales & Marketing, BlueScope Steel Ltd., Port Kembla, NSW 2505, Australia |
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| Abstract: | The deformation-induced microstructures and fracture appearances of Fe-Mn-Cr-N austenitic steel have been studied by using metallography, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. ϵ-Martensite and slip bands are the deformation-induced products on the {111}γ planes and appear as thin straight laths with a 60–80° alignment difference between them. ϵ-Martensite and slip bands were found to be kinked at face-centered cubic twin boundaries with a kink angle of 35–40°. The slip bands in the tensile deformation zone appear as a set of equilateral triangles. Slip-band traces with an intersecting angle of 60° between the bands are also observed on the transgranular facets of both impact and tensile fractures. |
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