Influence of Quenching Conditions on Microstructure Evolution and Hardness of 42CrMo4 Alloy Steel

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Authors

  • G. Ramesh
     Department of Metallurgical and Materials Engineering, Rajiv Gandhi University of Knowledge Technologies, R K Valley Campus, Kadapa - 516330, Andhra Pradesh ,IN
  • S. Surendarnath
     Department of Mechanical Engineering, Sri Venkateswara College of Engineering & Technology, Chittoor - 517127 ,IN
  • S. Ramesh Kumar
     School of Mechanical Engineering, SASTRA University, Thanjavur - 613401, Tamil Nadu ,IN

DOI:

https://doi.org/10.18311/jmmf/2023/43180

Keywords:

Cooling Condition, Hardening, Hardness, Microstructure, Quenchants, 42CrMo4 Steel.

Abstract

Evolution of microstructure and hardness in 42CrMo4 steel during quenching under the different cooling conditions were investigated. Mineral oil, polymer solution and water were selected as quenchants to provide different cooling conditions. Quenching experiments were also conducted under magnetic stirring and ultrasonic agitation of polymer solution. Cooling conditions during quenching had significant effect on phase transformation and hardness of 42CrMo4 steel. The quench hardened samples show martensite microstructure along with other micro-constituents. Needle like/acicular ferrite was observed with water quenching due to diffusion less transformation. Sample quenched under ultrasonic agitated medium showed formation of network of carbides. Higher hardness values were obtained with water quenching and ultrasonic agitated polymer quenching.

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Published

2024-05-24

How to Cite

G. Ramesh, Surendarnath, S., & Ramesh Kumar, S. (2024). Influence of Quenching Conditions on Microstructure Evolution and Hardness of 42CrMo4 Alloy Steel. Journal of Mines, Metals and Fuels, 71(12A), 441–446. https://doi.org/10.18311/jmmf/2023/43180

Issue

Volume 71, Issue 12A , 2023

Section

Articles

License

Creative Commons License

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

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