Total views : 210

Study on the Effect of Cryogenic Treatment of T1, T4 and M42 High-Speed Steels

Affiliations

  • Department of Mechanical Engineering, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, India

Abstract


Objectives: Deep cryogenic treatment is a one-time, permanent treatment affecting the entire part and not just the surface alone. Cryo treatment changes metals as a result of the martensitic transformation of retained austenite. Methods/ Statistical Analysis: Conventional Heat treatment and Cryo treatment are selected. The cryogenic fluid used here is nitrogen. An attempt is made to study the property changes mainly dwelling on the hardness of the high-speed steels before and after the Cryo treatment. Comparative studies made by modifying the quenching media oil, water and cryogenic media. Findings: The Cryo treatment using liquid nitrogen has shown the profound increase in the hardness of the tool steel materials. Moreover, by use of cryogenic treatment, multi-tempering could be avoided. From the optical microscopy studies, the actual component responsible hardness i.e. martensite is seen clearly in all the three samples but differs in the percentage of martensite content. Application/Improvements: Life of the cutting tools in the lathe, the milling and drilling will be enhanced.

Keywords

Cryogenic Treatment, Hardness, High-Speed Steels, Tempering, Tool Steels.

Full Text:

 |  (PDF views: 257)

References


  • Barron RF. Cryogenic treatment of metals to improve wear resistance. Cryogenics. 1982 Aug; 22(8):409–13.
  • Baldissera P, Delprete C. Deep Cryogenic treatment: A bibliographic review. The Open Mechanical Engineering Journal. 2008; 2:1–11.
  • El Mehtedi M, Ricci P, Drudi L, El Mohtadi S, Cabibbo M, Spigarcelli S. Analysis of the effect of Cryogenic treatment on the hardness and microstructure of X30 CrMoN 15 1 steel. Journal Materials and Design. 2012 Jan; 33:136–44.
  • Zhirafar S, Rezaeian A, Pugha M. Effect of Cryogenic treatment on the mechanical properties of 4340 steel. Journal of Materials Processing Technology. 2007 May; 186(1-3):298–303.
  • Molinari A, Pellizzari M, Gialanella S, Straffelini G, Stiasny KH. Effect of deep Cryogenic treatment on the mechanical properties of tool steels. Journal of Materials Processing Technology. 2001 Dec; 118(1-3):350–5.

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.