PSI - Issue 69

Dezhen Yang et al. / Procedia Structural Integrity 69 (2025) 97–104

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(3) The simultaneous enhancement in yield strength and ductility with increasing pearlite transformation temperature is attributed to the refined width of martensitic lath in ghost pearlite and the increased RA fraction and stability. This investigation opens a new avenue for producing high-strength and high-ductility steels via chemical heterogeneity in pearlite. The present study indicates that the initial microstructure has chemical heterogeneity and a rapid austenite process opens a new avenue to produce Mn-heterogeneous steels having high strength and ductility. Acknowledgements This work is supported by the the National Natural Science Foundation of China (52271004 and 51901021) and Hebei Natural Science Foundation (E2024105015). Data availability Data will be made available on request.