Study on microstructure and friction of bimetal 1.5Cr4.8ni with cast iron and low carbon steel

Authors

Q Zhang, University of WollongongFollow
Z Y. Jiang, University of WollongongFollow
G Xie, University Of Science And Technology Of China
D B. Wei, University of WollongongFollow
J T. Han, University Of Science And Technology Of China

RIS ID

72822

Publication Details

Zhang, Q., Jiang, Z. Y., Xie, G., Wei, D. B. & Han, J. T. (2012). Study on microstructure and friction of bimetal 1.5Cr4.8ni with cast iron and low carbon steel. Advanced Materials Research, 565 650-655.

Abstract

A cast iron/low carbon steel sandwich-structured bimetal fabricated through composite casting, followed by hot rolling and hot compression (40% reduction) in a vacuum, and water quenched using Gleeble 3500 thermomechanical simulator. The microstructure of a predominantly martensitic structure is transferred to a matrix with an amount of austenite. The measured results show that the macro-hardness is significantly lower due to the evolution of matrix. A considerable amount of secondary carbides were precipitated from the matrix. This study also shows that a significant difference in the value of coefficient of friction (COF) at the end when hot rolling (HR) was tested under three sets of sliding wear conditions, while those for hot rolling and heat treatment (HT) tends to be merged. An increased wear resistance of interfacial zone is expectable.