Effect of Microstructural Factors on the Strength and Deformability of Ferrite-Pearlite Steels with Different Mn and V Contents

홍태운,; 이상인,; 심재혁,; 이준호,; 이명규,; 황병철,; Hong, Tae-Woon; Lee, Sang-In; Shim, Jaesool; Lee, Jun-Ho; Lee, Myoung‐Gyu; Hwang, Byoungchul

doi:10.3740/mrsk.2018.28.10.570

Cited by 2 publications

(1 citation statement)

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“…The mechanical properties and microstructure of the medium-manganese steels vary with their chemical composition, rolling condition, and heat treatments [9]. Although many researchers have attempted to understand a correlation between the microstructure and the mechanical properties [10][11][12][13][14], there are few studies on the influence of alloying elements on mechanical properties including impact toughness. in the present study, four kinds of Fe-9mn-0.2C medium-manganese steels with different Al, Cu, and Ni contents were fabricated and the microstructure was characterized by scanning electron microscopy (Sem), X-ray diffraction (XRD), and electron back scatter diffraction (eBSD) analysis.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Yoon

Kim

Lee

et al. 2021

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Influence of Al, cu And ni AddItIons on MechAnIcAl ProPertIes of hot-rolled fe-9Mn-0.2c MedIuM-MAngAnese steelsThe microstructure and mechanical properties of hot-rolled Fe-9mn-0.2C medium-manganese steels with different Al, Cu, and Ni contents were investigated in this study. Based on the Sem, XRD, and eBSD analysis results, the microstructure was composed of martensite, band-type delta ferrite, and retained austenite phases depending on the Al, Cu, and Ni additions. The tensile and Charpy impact test results showed that the sole addition of Al reduced significantly impact toughness by the presence of delta-ferrite and the decrease of austenite stability although it increased yield strength. however, the combined addition of Al and Cu or Ni provided the best combination of high yield strength and good impact toughness because of solid solution strengthening and increased austenite stability.

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