**Wear**

**Chapter 1** 

© 2013 Yılmaz et al., licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2013 Yılmaz et al., licensee InTech. This is a paper distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

**Effect of FeCr Intermetallic** 

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/55869

**1. Introduction** 

S.O. Yılmaz, M. Aksoy, C. Ozel, H. Pıhtılı and M. Gür

and production via a vide range of manufacturing routes [3-6].

reinforcements, and in their structure their subgrain size is small.

**on Wear Resistance of Fe-Based Composites** 

Metal-matrix composites (MMCs) have higher stiffness and mechanical strength than alloys, however they have lower ductility and fracture toughness [1]. In microstructure of MMCs if a bond between particulate reinforcement and matrix has been constituted, then the composite exhibits an ability to withstand high tensile and compressive stresses. Continuous fibers, short or chopped fibers, whiskers and particulates have been used as reinforcement materials in MMCs. Discontinuous reinforcement phase composites are common due to availability, low cost, independence of mechanical properties from particulate orientation [2]

Wear is described as the removal of material from a surface in relative motion by mechanical or chemical processes [7]. The wear of the materials can be formed due to adhesion, abrasion, surface fatigue or tribochemical reaction [8,9]. The removal of material from the surface by hard particles (three-body abrasion) or by a rough counter face (twobody abrasion) is generally termed as abrasive wear. The wear resistance of a material is related to its microstructure, and the changes in microstructure may take place during the wear process [10,11] Developments of lightweight and energy-saving materials have become more numerous in the past few years in many different fields [12-16]. Recent studies [17-25] indicated that a significant improvement in the tribological properties of Fe alloys can be attained by the addition of hard carbides. Metallurgical processing, such as casting and powder metallurgy (P/M) techniques, has been successfully employed to produce antiabrasion Fe-based composites consisting of hard carbide particles [17-25]. The strength of the as-cast composites is usually less than that of the P/M composites, and it is also possible that some large casting defects exist in the cast. These problems can largely be overcome in the P/M route. Additional advantages of the P/M process are that a high dislocation density can be introduced into the matrix, recrystalization can be prevented by carbide
