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Cryogenic Treatment of SG Iron for Disc Brake Application
Technical Paper
2015-01-0689
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Cryogenic treatment has a good potential to significantly increase the service life of automotive components, where friction and wear are the major factors in their operation leading to failure. Cryogenic treatment changes the surface as well as the core properties of the component in comparison with other treatments. It has significant improvement in wear and toughness. Numerous studies have been conducted on cryogenic treatment of steels and tool steels showing significant improvements in wear resistance, only minimal work has been done in cast irons. In this study, the effect of cryogenic treatment on the wear resistance, hardness, tensile strength, toughness and microstructure of spheroidal graphite iron was assessed. The deep cryogenic treatment was carried out at 87K for 12h and annealed in the chamber itself. The samples were tempered at 473K for 1 h. The hardness, toughness and tensile strength of base material, cryotreated and cryotreated tempered samples were measured using Rockwell hardness, Impact testing machine and Universal testing machine respectively. Wear studies were performed using pin-on-disc wear testing machine with EN 31 steel as the disc. There was a significant increase in hardness, toughness and tensile strength due to cryogenic treatment. The results indicate an improvement in the wear rate of SG iron of 6.1-38.2% due to cryogenic treatment where significant wear has occurred and further improved to 52.9% due to tempering after cryogenic treatment. This finds suitable for disc brake application in automobiles.
Authors
Citation
Rajendran, R., Ramanjaneyulu, G., Tamilarasan, T., and Semenov, V., "Cryogenic Treatment of SG Iron for Disc Brake Application," SAE Technical Paper 2015-01-0689, 2015, https://doi.org/10.4271/2015-01-0689.Also In
References
- AVNER Sidney H Introduction to Physical Metallurgy McGraw Hill International Editions Second 450 453 1997
- Bramfitt B L and Ben scoter A O Metallographer's Guide: Practices and Procedures for Irons and Steels ASM International 16 21 2002
- Hafiz M Material science and engineering Elsevier 340 1 7 15 January 2003
- Bramfitt B L and Ben scoter A O Metallographer's Guide: Practices and Procedures for Irons and Steels ASM International 16 21 2002
- Collins D N Deep cryogenic treatment of tool steels: A review on Heat Treat. Met. 23 2 40 42 1996
- Yang , Hong-Shan , Wang , Jun , Shen , Bao-Luo , Liu , Hao-Huai , Gao , Sheng-Ji , Huang , Si-Jiu Effect of cryogenic treatment on the matrix structure and abrasion resistance of white cast iron subjected to destabilization treatment on wear 1150 1154 2006
- Mohan Lal D , Renganarayanan S , Kalanidhi A Cryogenic treatment to augment wear resistance of tool and die steels 41 3 149 155 2001
- Huang , J.Y. , Zhu , Y.T. , Liao , X.Z. , Beyerlein , I.J. , Bourke , M.A. , Mitchell , T.E. Microstructure of cryogenic treated M2 tool steel Mater. Sci. Eng. A 339 1-2 241 244 2003
- Handbook on design engineers digest on ductile iron Eighth IBM West Germany