Mechanical and thermal stability of retained austenite in plastically deformed bainite-based TRIP-aided medium-Mn steels

نویسندگان

چکیده

Abstract Advanced medium-Mn sheet steels show an opportunity for the development of cost-effective and light-weight automotive parts with improved safety optimized environmental performance. These utilize strain-induced martensitic transformation metastable retained austenite to improve strength–ductility balance. The improvement mechanical performance is related tailored thermal stabilities austenite. stability was estimated in static tensile tests over a wide temperature range from 20 °C 200 °C. during heating at elevated temperatures assessed by means dilatometry. phase composition microstructure evolution were investigated scanning electron microscopy, backscatter diffraction, X-ray diffraction transmission microscopy techniques. It shown that shows pronounced dependence also stimulated manganese addition 3–5% range.

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ژورنال

عنوان ژورنال: Archives of Civil and Mechanical Engineering

سال: 2021

ISSN: ['1644-9665', '2083-3318']

DOI: https://doi.org/10.1007/s43452-021-00284-6