Dynamic Compressive Mechanical Behavior and Microstructure Evolution of Rolled Fe-28Mn-10Al-1.2C Low-Density Steel

Hao Wu, Yan Tan, Abdul Malik*, Yangwei Wang*, Syed Zohaib Hassan Naqvi, Huanwu Cheng, Jiebin Tian, Xianming Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this study, the quasi-static and dynamic compressive mechanical behavior of a rolled Fe-28Mn-10Al-1.2C steel (low-density) was investigated. X-ray diffraction, optical microscopy, electron backscattered diffraction and transmission electron microscopy were conducted to characterize the microstructure evolution. The results displayed that the steel has remarkable strain rate sensitivity and strong strain hardenability under high strain rate compression. Most specifically, the deformation behavior was changed with the increase in the strain rate. A feasible mathematical analysis for the calculation of stacking fault energies and the critical resolve shear stresses for twinning was employed and discussed the nucleation of the twinning. The microband-induced plasticity and twinning-induced plasticity controlled the deformation under high strain rate compression and provided a strong strain hardening effect. The higher mechanical response can increase the broad use of low-density steel in automobile applications.

Original languageEnglish
Article number3550
JournalMaterials
Volume15
Issue number10
DOIs
Publication statusPublished - 1 May 2022

Keywords

  • dynamic compression
  • low-density steel
  • mechanical twinning
  • planar glide
  • strain hardenability
  • temperature rise

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Wu, H., Tan, Y., Malik, A., Wang, Y., Hassan Naqvi, S. Z., Cheng, H., Tian, J., & Meng, X. (2022). Dynamic Compressive Mechanical Behavior and Microstructure Evolution of Rolled Fe-28Mn-10Al-1.2C Low-Density Steel. Materials, 15(10), Article 3550. https://doi.org/10.3390/ma15103550