Investigation of Mechanical Properties of Carbidic Ductile Cast Iron

International Journal of Research and Scientific Innovation (IJRSI) | Volume IV, Issue XII, December 2017 | ISSN 2321–2705

Investigation of Mechanical Properties of Carbidic Ductile Cast Iron

R.Rajvel[1], S.Mahendran[2], R.Pradeep Kumar[3]

[1,2,3] Assistant Professor, Department of Mechanical Engineering, SNS College of Engineering, Coimbatore – 641 107

Abstract: The objective of the present work is to increase the wear resistance for long life of applications. It is found that increase in the carbides in an alloy which resulted in to enhancement in hardness and wear resistance. The wear resistance was evaluated by testing in accordance with ASTE International Committee G-99 Standard. An improved performance of wear resistanceis obtained by increasing the content of chromium in the carbidic ductile cast iron. The results are discussed based on the influence of chromium content on the casting.

Keywords: carbidic ductile iron, Annealing, chromium, Microstructure.

I. INTRODUCTION

Cast irons are primarily used in many industrial applications including automobiles due to lower cost and superior combination of properties such as thermal conductivity, good vibration damping properties with good wear resistance and mechanical properties. Components in automobile such as clutch, brakes, Cylinder liners and piston rings are made of cast iron and many of these application require good resistance of aggressive forms of sliding wear [2]. Now a days the use of carbidic ductile iron is increasing because of its excellent combination of high abrasion resistance and good impact toughness compared to other materials with similar wear resistance. It is less expensive and tougher than 18% chromium white iron and it can replace Mn steel at an equal or lower cost. II. EXPERIMENTAL PROCEDURE The samples were designated for impact, and hardness test were cut from the block of the Y-block and machined to 300mmx20mmx90mm. Heat treatment process is done to alter the physical and sometimes the chemical properties of the material. This process involves the use of heating or chilling, normally to the extreme temperatures, to achieve a desired result such as hardening or softening of a material[6]. This process includes annealing. Annealing is heating, maintaining certain time at a temperature and cool regularly after reaching the desired properties. It is a process where a work piece is deliberately exposed to a temperaturetime-atmosphere process in order to reach certain desired properties.

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