Increasing low‐temperature toughness of 09mn2si steel through lamellar structuring by helical rolling

Sergey Panin, Ilya Vlasov, Dmitry Moiseenko, Pavel Maksimov, Pavlo Maruschak, Alexander Yakovlev, Julia Gomorova, Ivan Mishin, Siegfried Schmauder

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of the paper was to investigate the helical rolling parameters (a number of passes) for the microstructural modification and the low‐temperature impact toughness improvement of the 09Mn2Si High Strength Low‐Alloyed (HSLA) steel. In order to achieve this purpose, work spent to crack initiation and propagation was analyzed and compared with patterns of fracture surfaces. The microstructure and impact toughness values were presented in the temperature range from +20 to –70°C. Also, the fracture mechanisms in individual regions on the fracture surfaces were dis-cussed. In addition, a methodology for computer simulation of the process was developed and im-plemented within the framework of the excitable cellular automata method and its integration with the kinetic theory of fracture. Finally, a theoretical analysis of the effect of grain shapes and orien-tations on the strain response patterns of a certain meso‐volume simulating the material after the helical rolling was carried out.

Original languageEnglish
Article number352
Pages (from-to)1-29
Number of pages29
JournalMetals
Volume11
Issue number2
DOIs
Publication statusPublished - Feb 2021

Keywords

  • Computer simulation
  • Excitable cellular automata method
  • Helical rolling
  • High strength low alloyed steels
  • La-mellar microstructure
  • Low‐temperature impact toughness

ASJC Scopus subject areas

  • Materials Science(all)

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