Effect on Microstructure of TMT Welded Bar under Different Cooling Media

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Authors

  • R. P. Singh
     Sr. Principal Scientist, CSIR–Central Institute of Mining & Fuel Research, Dhanbad, Jharkhand ,IN
  • Md. Anis Raza
     Post Graduate Scholar, Production Technology, B.I.T Sindri, Dhanbad, Jharkhand ,IN
  • Mousumi Mallick
     Scientist, CSIR–Central Institute of Mining & Fuel Research, Dhanbad, Jharkhand ,IN
  • M. K. Verma
     Technical Officer, Metallurgy, CSIR–Central Institute of Mining & Fuel Research, Dhanbad, Jharkhand ,IN

Keywords:

TMT, Microstructure, Welding, Quenching, Heat Affected Zone.

Abstract

Arc welding is widely used for domestic as well as industrial purposes as it is very convenient to use. Mechanical properties such as tensile strength and hardness depend on microstructure. This paper presents the results of metallography examination of weld zone and heat affected zone (HAZ) in the welded rod which are welded and cooled in air, transformer oil, kerosene oil and water. The rate of cooling differs from each media thus there is microstructure change in weld zone as well as HAZ. In the weld zone, hardness is found to be more in case of transformer oil cooled sample in comparison with others cooling method applied here. The toughness of water cooled sample is found to, be more because of its presence of large amount of ferrite region along with pearlite and martensite. In the heat affected zone, water cooled sample is found to possess mare hardness due to formation of martensite. The arc welded transformer oil cooled sample seems to be best among all with regard to its structure, hardness and toughness.

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Published

2022-10-21

How to Cite

Singh, R. P., Anis Raza, M., Mallick, M., & Verma, M. K. (2022). Effect on Microstructure of TMT Welded Bar under Different Cooling Media. Journal of Mines, Metals and Fuels, 66(6), 354–362. Retrieved from https://informaticsjournals.com/index.php/jmmf/article/view/31719

Issue

Volume 66, Issue 6, June 2018

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

References

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