The Erosion Phenomena Affecting Residual Stress In Nickel Chromium Alloyed Irons

Abstract

The nickel chromium alloyed irons find extensive applications in industries especially in thermal power plants as wear resistant materials. Also, it is known that failure of any part may occur due to fatigue, erosion, creep, wear related problems. Many researchers have reported the cause of failures, which are attributed to thermal degradation, chemical attack, residual stress built up, higher operating speed etc. In this regard, the influence of high temperature, corrosion and other process parameters influencing residual stress in metallic materials have been addressed, documented and published, but the information on wear damage assessment in metals especially white irons affecting residual stress is less reported. Considering all the above aspects in view, the present work provides an insight in to residual stress development due to erosive wear in nickel chromium irons coupled with other associated findings such as composition, hardness, microstructure and roughness supporting the stress profile.