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ISRN Tribology
Volume 2013 (2013), Article ID 515484, 6 pages
Research Article

Effect of Austempering and Martempering on the Properties of AISI 52100 Steel

1Department of IPE, GITAM University, Visakhapatnam 530045, India
2Department of Mechanical Engineering, GITAM University, Visakhapatnam 530045, India
3Department of IPE, GITAM University, Visakhapatnam 530045, India

Received 1 June 2012; Accepted 4 July 2012

Academic Editors: L. Bourithis and J. Mao

Copyright © 2013 P. Vamsi Krishna et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The mechanical properties of steel decide its applicability for a particular condition. Heat treatment processes are commonly used to enhance the required properties of steel. The present work aims at experimentally investigating the effect of austempering and martempering on AISI 52100 steel. Different tests like microstructure analysis, hardness test, impact test, and wear test are carried out after heat treatment process. It was found that annealed steel was least hard and more wear prone, while martempered steel was hardest and least vulnerable to wear. Austempered steel had the highest impact strength and it is increased with soaking time up to certain level. Least wear rate is observed in martempered sample both in abrasion and dry sliding. However, least friction coefficient is shown by annealed samples.