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<p>TRIP steels with multiphase microstructure (Ferrite-Bainite-Austenite) are used in vehicle structures due to their ductility and mechanical strength, which increases with plastic deformation due to transforming austenite into martensite. In friction wear, compression, and shear stresses are deforming the microstructure, a TRIP steel exposed to these mechanisms could present the same transformation generating surface hardening that reduces the coefficient of friction. The effect of the load in friction tests (ASTM G-77) on the microstructure of multiphase steel manufactured with AISI-1018 steel and additions of Mn and Si, hot-rolled and heat-treated was evaluated. The results show the multiphase microstructure and mechanical properties of a TRIP steel, the wear resistance increases by 73% with increasing load, this is attributed to surface hardening due to plastic deformation of the surface. The main wear mechanism with the three loads was adhesion with accumulated material flow, and fractures were observed for 154 N.</p> Graphical abstract <p></p>

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Microstructural behavior of multiphase steel with trip effect subjected to adhesive wear

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • D. Quintana-Moreno,
  • J. S. Pacheco-Cedeño,
  • P. Garnica-Gonzalez,
  • F. V. Guerra-López,
  • J. J. Cruz-Rivera,
  • J. L. Rodriguez-Muñoz,
  • C. E. Borja-Soto

摘要

TRIP steels with multiphase microstructure (Ferrite-Bainite-Austenite) are used in vehicle structures due to their ductility and mechanical strength, which increases with plastic deformation due to transforming austenite into martensite. In friction wear, compression, and shear stresses are deforming the microstructure, a TRIP steel exposed to these mechanisms could present the same transformation generating surface hardening that reduces the coefficient of friction. The effect of the load in friction tests (ASTM G-77) on the microstructure of multiphase steel manufactured with AISI-1018 steel and additions of Mn and Si, hot-rolled and heat-treated was evaluated. The results show the multiphase microstructure and mechanical properties of a TRIP steel, the wear resistance increases by 73% with increasing load, this is attributed to surface hardening due to plastic deformation of the surface. The main wear mechanism with the three loads was adhesion with accumulated material flow, and fractures were observed for 154 N.

Graphical abstract