Intercritical Annealing Temperature: Influence on the Mechanical Properties of Low Alloy Dual-Phase Fe/0.08C/0.4Mn Steel.

Anthony Olakunle Ogunmefun, Tamba Jamiru, Emmanuel Rotimi Sadiku, Babatunde Abiodun Obadele, Emmanuel Olorundaisi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


A study has been made on the effects of inter-critical annealing temperature on the mechanical behavior of a low alloy dual phase Fe/0.083C/0.4Mn steel. Homogenization and normalization of the substrates via heat treatments were performed on low carbon-manganese steel. The direct annealing heat treatments were carried out at 735C, 755C, 795C and 830C, and suddenly quenched in cold water. Dual phase ferrite-martensite steel was obtained. Tensile and yield tests were determined through their relationship equation with hardness test at room temperature. Indentation analysis was carried out on the microstructure of each sample. The results revealed that the best mechanical properties in dual-phase steels, e.g., impact toughness and ductility, appear at the inter-critical temperature of 735C, highest strength at 755C, duplex microstructure were obtained when the temperature is higher than 800 C, with the highest ductility properties at 830C.

Original languageEnglish
Title of host publication2019 Open Innovations Conference, OI 2019
EditorsNixon Muganda Ochara, Julius Nyerere Odhiambo
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781728134642
Publication statusPublished - Oct 2019
Event2019 Open Innovations Conference, OI 2019 - Cape Town, South Africa
Duration: 2 Oct 20194 Oct 2019

Publication series

Name2019 Open Innovations Conference, OI 2019


Conference2019 Open Innovations Conference, OI 2019
Country/TerritorySouth Africa
CityCape Town


  • grain size
  • heat treatment
  • intercritical annealing temperature
  • micro-indentation hardness
  • microstructure
  • ultimate tensile strength
  • yield strength

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Information Systems
  • Health Informatics
  • Education
  • Health (social science)
  • Sociology and Political Science


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