Effect of Inoculant Containing Si and Ba on Microstructure and Mechanical ‎Properties of Ferritic Ductile Iron Castings ‎

Document Type : Original Research Article

Authors

1 Assistant Professor, Department of Materials Engineering, Amol Branch, Islamic Azad University Ayatollah Amoli, Amol, Iran

2 Assistant Professor, Department of Materials Engineering, Amol Branch, Islamic Azad University Ayatollah Amoli, Amol, Iran.

3 Department of Materials Engineering , Applied Science and Technology - FZA Center

4 Department of Materials Engineering, Applied Science and Technology-FZA Center.

5 Department of Materials Engineering, Applied Science and Technology-FZA Center

10.22034/frj.2022.330961.1153

Abstract

The effect of chemical composition and amount of inoculant on microstructure specially ferrite phase and graphite nodule count and mechanical properties containing ultimate tensile strength (UTS) and hardness of ferritic ductile iron were considered. In this project, three conditions were evaluated. They were without inoculant, barium and silicon base inoculants were used. Inoculant percentages were 0.1, 0.15 and 0.2 percent. The results show that inoculation encourages the ferrite formation from 75 percent to 90 percent in matrix, increasing the nodule count from 125 to 175, decreasing the hardness from around 200 HB to close 160 HB and decreasing the UTS from more than 500 MPa to close the 400 MPa. In comparison between barium and silicon base inoculants, it was seen that effect of inoculants on the microstructure was same but on the mechanical properties was different and barium base inoculant had more appropriate effect in comparison with silicon base inoculant.

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References

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Founding Research Journal
Volume 5, Issue 3 - Serial Number 18
September 2021
Pages 215-222

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History

  • Receive Date: 22 February 2022
  • Revise Date: 16 May 2022
  • Accept Date: 24 June 2022

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