Cover
Vol. 22 No. 2 (2022)

Published: December 31, 2022

Pages: 27-32

Original Article

Study the Effect of Quenching and Tempering Conditions on the Fatigue Coefficients for Low Carbon Steel

Azzam D. Hassan 1 Safaa A. S. Almtori 1 Atef Nema 1
1 Department of Material Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: March 20, 2022
  • Revised: April 28, 2022
  • Accepted: May 8, 2022
  • Available Online: December 24, 2022
DOI

https://doi.org/10.33971/bjes.22.2.5

Abstract

Four groups of AISI 1020 specimens were heat-treated at 850 °C in a muffle furnace for 30 minutes then quenched in oil. The samples were tempered at 400 °C with a time period for each group as (group B, 2 hours), (group C, 3 hours), and (group D, 4 hours). The mechanical properties of the samples were studied using universal tensile testing equipment and a Brinell hardness testing machine. The hardness values of the quenched samples were calculated from a given modified equation. The torsional fatigue behavior of AISI 1020 was discovered in this investigation for heat-treated specimens and compared with the original specimens. All groups were subjected to an analysis using an optical microscope. Pearlite is formed when is heated in the austenitic region and then cooled below a lower critical temperature. It was concluded that the heat treatment increases the hardness for the specimens while decreased the shear fatigue ductility coefficient. Also, the heat treatment increased the shear fatigue strength coefficient. Furthermore, increasing in the time period of the tempering process was leaded to decrease the coefficient of shear fatigue strength and increased the coefficient of shear fatigue ductility.

Keywords

References

  1. W. Chen, S. Wang, Z. Zhao, J. Liang, and J. Guo, “Effect of quenching temperature on the microstructure and mechanical properties of 30MnBNbV hot stamping steel”, Materials Research Express, Vol. 6, No. 10, 2019.
  2. J. Wang, Y. Kang, H. Yu, W. Ge, “Effect of Quenching Temperature on Microstructure and Mechanical Properties of Q1030 Steel”, Materials Sciences and Applications, Vol. 10, No. 10, 2019.
  3. Q. Zhu, J. Li, C. Shi, and W. Yu, “Effect of Quenching Process on the Microstructure and Hardness of HighCarbon Martensitic Stainless Steel”, Journal of Materials Engineering and Performance, Vol. 24, pp. 4313-4321, 2015. https://doi.org/10.1007/s11665-015-1723-7
  4. T. Senthilkumar, and T. K. Ajiboye, “Effect of Heat Treatment Processes on the Mechanical Properties of Medium Carbon Steel”, Journal of Minerals & Materials Characterization & Engineering, Vol. 11, No. 2, pp.143152, 2012. https://doi.org/10.4236/jmmce.2012.112011
  5. L. O. Mudashiru, E. O. Olafimihanand, and S. O. Adetola, “Effect of Quenching and Heating Temperature on the Microstructure and Mechanical Properties of AISI 1020”, International Journal of Scientific & Engineering Research Vol. 9, Issue 7, 2018.
  6. N. Shamsaei, A. Fatemi, “Deformation and fatigue behaviors of case-hardened steels in torsion: Experiments and predictions”, International Journal of Fatigue, Vol. 31, Issue 8-9, pp. 1386-1396, 2009.
  7. D. S. Mackenzie, “History of quenching”, International Heat Treatment and Surface Engineering, Vol. 2, Issue 2, pp. 68-73, 2008.
  8. M. Legerská, J. Chovanec, A. S. Chaus, “Development of High-Speed Steels for Cast Metal-Cutting Tools”, Mechatronic Systems and Materials, Vol. 113, pp. 559564, 2006.
  9. ASTM- E10-18, “Standard test method for Brinell hardness of metallic materials, American National Standards Institute”, 2017.
  10. A. D. Hassan and M. J. Abbas, “New Prediction Model of Tempered Martensite Hardnesses for Quenched and Tempered Low-Alloy Steel”, Materials performance characterization, Vol. 10, Issue 1, 2021.
  11. S. Dewangan, N. Mainwal, M. Khandelwal, and P. Sunil, “Performance analysis of heat treated AISI 1020 steel sample on the basis of various destructive mechanical testing and microstructural behavior”, Australian Journal of Mechanical Engineering, Vol. 20, Issue 1, pp. 74-87, 2019. https://doi.org/10.1080/14484846.2019.1664212
  12. L. O. Mudashiru, I. A. Babatunde, W. A. Raheem and A. K. Lasisi, “Effect of immersion speed on the mechanical properties and microstructure of oil quenched AISI 1020 steel”, Journal of Engineering and Technology Research, Vol. 6, No. 5, pp. 68-74, 2014.