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<p>This article investigates the forgeability of a microalloyed steel 0.18C-1.38Mn-0.36Si-0.47Cr-0.03Mo-0.05Al-0.04Nb-0.01Ti, with emphasis on its application in the hot forging process followed by continuous cooling, aiming to eliminate traditional quenching and tempering heat treatments. The research seeks to understand how thermomechanical parameters influence the microstructure and material behavior during processing. The approach included experiments and numerical simulations, as well as detailed analysis of the prior austenitic structure. The wedge test was employed to correlate microstructural changes with deformation under different temperatures. The results show that controlled deformation, combined with high forging temperatures, promotes recrystallization and grain refinement, resulting in a uniform bainitic microstructure and high hardness levels. The steel showed potential for application in small-volume parts, offering a cost-effective and energy-efficient solution by eliminating the need for heat treatments.</p>

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Analysis of Hot Forging of a Bainitic Steel Hardened by Continuous Cooling Using Wedge Test

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • André Rosiak,
  • Luana De Lucca de Costa,
  • Thomas Gomes dos Santos,
  • Lirio Schaeffer

摘要

This article investigates the forgeability of a microalloyed steel 0.18C-1.38Mn-0.36Si-0.47Cr-0.03Mo-0.05Al-0.04Nb-0.01Ti, with emphasis on its application in the hot forging process followed by continuous cooling, aiming to eliminate traditional quenching and tempering heat treatments. The research seeks to understand how thermomechanical parameters influence the microstructure and material behavior during processing. The approach included experiments and numerical simulations, as well as detailed analysis of the prior austenitic structure. The wedge test was employed to correlate microstructural changes with deformation under different temperatures. The results show that controlled deformation, combined with high forging temperatures, promotes recrystallization and grain refinement, resulting in a uniform bainitic microstructure and high hardness levels. The steel showed potential for application in small-volume parts, offering a cost-effective and energy-efficient solution by eliminating the need for heat treatments.