Effects of cryogenic treatment on the wear properties of brake discs

Nadig, D S and Shivakumar, P and Anoop, S and Kulkarni, Chinmay and Divine, P and Harsha, H P (2017) Effects of cryogenic treatment on the wear properties of brake discs. In: 26th International Cryogenic Engineering Conference / International Cryogenic Materials Conference, MAR 07-11, 2016, Indian Cryogen Council, New Delhi, INDIA.

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Abstract

Disc brakes are invariably used in all the automobiles either to reduce the rotational speed of the wheel or to hold the vehicle stationary. During the braking action, the kinetic energy is converted into heat which can result in high temperatures resulting in fading of brake effects. Brake discs produced out of martensite stainless steel (SS410) are expected to exhibit high wear resistance properties with low value of coefficient of friction. These factors increase the useful life of the brake discs with minimal possibilities of brake fade. To study the effects of cryogenic treatment on the wear behaviour, two types of brake discs were cryotreated at 98K for 8 and 24 hours in a specially developed cryotreatment system using liquid nitrogen. Wear properties of the untreated and cryotreated test specimens were experimentally determined using the pin on disc type tribometer (ASTM G99-95). Similarly, the Rockwell hardness (HRC) of the specimens were tested in a hardness tester in accordance with ASTM E18. In this paper, the effects of cryotreatment on the wear and hardness properties of untreated and cryotreated brake discs are presented. Results indicate enhancement of wear properties and hardness after cryogenic treatment compared with the normal brakes discs.

Item Type:	Conference Proceedings
Series.:	IOP Conference Series-Materials Science and Engineering
Publisher:	IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Additional Information:	26th International Cryogenic Engineering Conference / International Cryogenic Materials Conference, Indian Cryogen Council, New Delhi, INDIA, MAR 07-11, 2016
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology
Date Deposited:	20 May 2017 07:20
Last Modified:	20 May 2017 07:20
URI:	http://eprints.iisc.ac.in/id/eprint/56968

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